To the International Science Foundation, from Sherstyuk A.I.

                                        Proposal No
                       APPLICATION FORM
            ISF LONG-TERM RESEARCH GRANTS PROGRAM.
                               
1.  Sherstyuk Aleksey Ivanovich.
2.  ÿÑpßã_^ ǽÑ^ßÑ` êóá¡3a. 17 June 1937.
3b. Leningrad (at present St.-Petersburg).
4a.Passport Seria XIV-AK No 732463.
4b. Date of Issue:28 March 1980. Place:Leningrad.
5. Russia.
6a. Leading Researcher,Head of Research Group.
6b. All-Russian Scientific Center"S.I.Vavilov State
   Optical Institute".
7a. 12 Birzevaya line,St.-Petersburg 199034,Russia.
7b. Tel.:(812)218-99-42. 7c.Fax:(812)350-99-93.
7d. E-mail:sergeev@soi.spb.su (for A.I.Sherstyuk).
8a. P.O. D-14,Box 95,St.-Petersburg 191014,Russia.
8b. Tel.:(812)279-38-02.
9a. Doctor of Physics and Mathematics
9b.1986                     9d. Ph.D./Kandidat 1973.
9c. Leningrad State University. 9e.S.I.Vavilov State
                                  Optical Institute
10. Development of new approach to atomic and molecular
   processes calculations based on the generalization of
   Sturmian-type expansions method to many-electron systems.
11. Physics I (mathematical physics),Physics IV(atomic and
   molecular physics).
12. Requested Amount
   First Year     Second Year    Total
   $10,000        $9,300         $19,300
13.Requested duration. Two years 1994-1995.
14. By signing this application I certify that I meet all
   the eligibility requirements of this announcement and
   that I am prepared to honor all the conditions of this
   program.
   Signature:
   Date: 17.09.93
15. Other Participating Researchers.
(1) a. Solov'eva Galina Semenovna
    b. 5 December 1944
    c. S.I.Vavilov State Optical Institute,St.Petersburg
    d. Scientific Researcher
    e. Passport: XXIII-AK, No 585758
    f. 25 June 1993, St.Petersburg
    g. Ph.D./Kandidat
    h. 1987
(2) a. Bardjan Eduard Alekseevich
    b. 1 June 1973
    c. Precise Mechanics and Optics educational Institute
    d. IV year student.
    e. Passport: XX-AK, No 711266
    f. 22 August 1989, Leningrad
    g. Have hot degree
16. Official who will have fiduciary responsibility for
    management of indirect costs
    a.Gorbunov Bores Vasilievich  b. Director  c. Optical
    Instrumentation and Photo-Engineering Research Institute,
    belonging to the all-Russian Scientific
    Centre "S.I.Vavilov State Optical Institute".
    d.12 Birzheraya line, St. Petersburg 199034, Russia
    e.  Tell.:(812)218-75-26/Fax:(812)218-21-33
    f. E-mail:leader@soi.spb.su
17. Abstract:The long-term scientific objective of the
    project is development and improvement a new approach
    to protractive calculations of various properties of
    many-electron systems based on the use of spectral
    expansions in the full sets of Sturmian-like Haltere-
    Voc virtual orbitals belonging to pure discrete
    spectrum. The specific aim of the project is extending
    the scope of applicability of the method on reference
    to the full consideration of electron correlation and
    relativistic effects.
      We are intend:1) To develop a version of Feynman-Gold-
    stone diagram technique by including the expansions in
    Sturm-type non Coulomb intermediate states. 2) To inves-
    tigate the peculiarities of the spectrum of the genera-
    lized eignvalue (Sturmian) problem connected with Dirac
    Hartree-Fock equations with various weight operators.
    3) To test the abilities of the method by carrying out
    the concrete calculations of various physical properties
    (polarizabilities,hyperpolarizabilities,multiphoton
    transition probabilities etc.) of open shell systems
    with accounting of the correlation and relativistic ef-
    fects. 4) To investigate the connection of the genere-
    lized Sturmian approach with the dynamical symmetry of
    the systems meaning the application to semi-classical
    calculations.
18. Suggested Expert Reviewers.
    (1) Brian G. Wybourne, Professor, N. Copernicus Univer-
    sity, Institute of Physics, ul. Grudziadzka 5/7,
    PL-87-100,Torun,Poland. E-mail:bgw@risc.phys.torun.edu.
    pl
    (2) A.Dalgarno,Professor, Institute for Theoretical Ato-
    mic and Molecular Physics,Harvard-Smithsonian Center for
    Astrophysics, 60 Garden Street, Cambridge, Massachusetts
    02138,USA
    (3) Robin Shakeshaft, Professor,University of Southern

   California, Los Angeles, California 90089-0484,USA
    Paper:Sturmian basis calculations... J.Opt.Soc.Amer.,1990,
     7,433.
    (4) Donald R.Beck, Professor, Physics Department, Michi-
    gan Tehnological University,Haugton,Michigan 49931, USA
    Paper:Relativistic many-body results...Phys.Rev.A,1991,
    44,758..
    (5) Popov Vladimir Stepanovich,Professor,Institute of
     Theoretical and Experimental Physics,Bol'shaya
     Cheremushkinskaya 25,Moscow 117259,Russia.Tel.:
     (095)123-97-61; (095)438-40-64.E-mail:popov@compnet.
     npimsu.msk.su    Paper: Strong field Stark effect...
     Phys.Lett., 1990,149,418.
     (6) Braun Mikhail A., Professor, Faculty of High-Energy
     Physics and Elementary Particles St.-Petersburg State
     University,St.-Petersburg 198904, Russia. Tel.:(812)
     428-75-90, E-mail: braun@onti.phys.lgu.spb.su
     Publication: Book:"Relativistic atomic theory",Moscow,
     "nauka",1984 (in Russian).


          

                             Attachment  a.
                           Research statement.
   a.  Specific  Goals  of  the project  are  development  and
improvement  of  the new approach to calculations  of  various
properties  of  many-electron systems  based  on  the  use  of
spectral  expansions in the discrete-basis-sets of  Sturm-type
virtual orbitales. We intend to study the possibilities of the
method  in  reference to calculations accounting the  electron
correlation and relativistic corrections.
   b.  Background and Significance. The advantages of Sturmian
basis  calculations as applied to one-particle (hydrogen-like)
perturbation  problem are wide known. But a generalization  of
the  method to non-Coulomb and many-particle systems is  faced
with  certain  difficulties. Our approach to  the  problem  is
based on the using of expansions in the eigenfunctions of  the
generalized  eigenvalue  problem  connected  with  a  suitable
unperturbed  operator,e.g.Hartree-Fock  operator.   With   the
proper choice of a weight operator we do receive a full set of
square  integrable basis functions belonging to pure  discrete
spectrum  and hence we avoid the troubles connected  with  the
integration over the continuum of the intermediate states.
  c. Preliminary Studies. We used originally the hydrogen-like
discrete-basis  functions (conventional  Sturmian  basis)  for
determination  of  closed  form expressions  for  perturbation
theory corrections to wave functions of bound states of  atoms
in  [6](here  and further we use the publication list  number)
and  in  the  earlier  publications.  The  generalization   of
Sturmian expansions on the two-center (molecular) Systems  has
been  proposed  in  [7].  The  possibility  of  employment  of
Sturmian-type  basis  in the perturbation  theory  problem  in
Hartree-Fock method was initially proposed by us in 1977  [8].
A  systematic approach to the construction of the complete set
of  the  Sturmian-type intermediate states in the many-fermion
bound   state  perturbation  calculations  was  suggested   in
[9,10],where  the conventional diagram technique  was  adapted
for  the  calculations  with  the use  of  the  quasi-particle
Sturmian-like  expansions. Later,on  the  basis  of  developed
approach it was carried out the calculations of various atomic
properties(mainly static and dynamic polarizabilities
[1,4,5]).  The  convergence of all  the  expansions  has  been
proved  to be very rapid. So,the calculations become extremely
simple and hence more reliable in comparison with calculations
based on conventional approach.
    The  mathematical  groundwork  of  generalized  eigenvalue
problem  connected  with  the Schredinger  equation  has  been
presented  in [2]. The topical review of modern state  of  the
problem  has  been  published in  my  paper  in  "Problems  of
Theoretical  Physics"III,in Leningrad University  Press,1988,p
90-114.
   d. Research Design and Methods.
   1.  In  the  proposed project we intend  to  carry  out  an
investigation   directed  to  expanding  of   the   scope   of
applicability of early developed generalized Sturmian approach
to  the  case  of  calculation of quantum processes  in  many-
electron  systems  with  accounting  of  the  correlation  and
relativistic effects.
    We  are  considering the generalized ½- eigenvalue problem
for  the equation:(Ho-e)f=½gf, where Ho is unperturbed (in our
case  usually Hartree-Fock) operator, g is a weight  operator.
The character of the spectrum of such equation can be assigned
by  suitable choice of g, which may in particular be any  part
of  Ho.  The  set  of eigenfunctions(Sturmian-like  functions)
determine  the diagonal expansion of the Green's  function  of
Ho.  The main impediment which arises when Ho is many-particle
Hamiltonian  operator  consist in difficulty  of  simultaneous
satisfaction both condition of full division of variables  and
the  elimination of continuous spectrum from the expansion  of
full many-particle Green's function.
   In  the  independent particle approximation the problem  is
simplified.  The one-particle Green's function can  be  always
represented  as expansion in the discrete series of  Sturmian-
like  virtual orbitales. Two-particle Green's function  has  a
more complex structure. Since the perturbation calculations of
atomic    and   molecular   processes   do   involve,generally
speaking,the two-particle Green's functions,our specific  goal
is  to  formulate approximation in which such calculations  do
not  involve the integration over continuous spectrum at  all.
To  this  effect  we may consider a Feynman-Goldstone  diagram
technique  including  the  electron  propagators  expanded  in
Sturmian-like  intermediate states. The special  attention  in
this  approach  will  be  paid to the  choice  of  appropriate
classes  of  diagrams(as in RPAE). On the other  hand,  it  is
expected  to be suitable in the concrete calculations  to  use
some  modification  of  the coupled Hartree-Fock  perturbation
theory  with  summations only over pure discrete  intermediate
states.  We  intended to obtain as result a  very  simple  and
reliable  method of ab initio calculations of the  atomic  and
molecular processes.
Further,with  the  use  of  developed  approach  the   various
physical properties (e.g. polarizabilities,hyperpolarizabi-
lities,van   der  Waals  coefficients,multiphoton   transition
probabilities etc.) will be calculated and received  numerical
results  will  be  compared with the existed  theoretical  and
experimental  data. A special attention will be  paid  to  the
convergence studies of the used expansions.
    At  the same time, the methods of calculation of molecular
processes with the use of two-centre Sturmian virtual orbitals
will be developed for many-electron molecules.
   2. In the calculations of processes in highly ionized atoms
it  is essential to use the relativistic theory. In this  case
we  must examine the generalized eigenvalue problem containing
a  Dirac operator with an arbitrary potential energy term. The
construction  of  the pure discrete set of  eigenfunctions  in
this case is faced with difficulties connected with the choice
of such a weight operator that ensure simultaneous elimination
of the integrations over both positive and negative continuum.
We   intend   to  overcome  this  difficulty  by   appropriate
introduction  of  projection  operators.  We  also  intend  to
investigate the peculiarities of the spectrum of the resulting
eigenvalue problem with various weight matrix-operators.
  3. We intend to investigate the connection of solutions of
Sturmian  eigenvalue problem with dynamical  symmetry  of  the
system,having in mind facilitation of the calculations of  the
relevant  matrix  elements  and  subsequent  construction   of
generalized cogerence states essential to semi-classical
calculation.
  The obtained results will be submitted to Phys. Review A,
JOSA, Journ, of Exper. and Theor.Phys.(Russian),Optics
and Spectroscopy (Russian).
                        Attachment b.

                   PROPOSAL BUDGET on 1994.
               ISF LONG-TERM RESEARCH GRANTS PROGRAM.
   Principal Investigator's Name:           Proposal Number:
   Sherstyuk A.I.
 1. Individual Finansical                Funds     Funds
    Support                            Requested   Granted
                                       by Proposer by ISF

  A. Principal Investigator.
    Amount per month: $300.
    Number of months  : 12.
        Total A:                     $3600            $
 B. Other investigators.
   1. Solov'eva G.S.(She will be working out the procedure of
numerical soolution of the generalized eigenvalue problem
resulting from Hartree-Fock and Hartree-Fock-Dirac equations
with various type of weight operators).
   Amount per month: $150.
   Number of months: 12.
Total B:                               $1800.           $
 C. Student: Bardjan E.A.(He will be taking part in the
   studies the connection of the solutiolns of Sturmian
   eigenvalue problem with dynamical symmetry of the
   system).
   Amount per month: $50.
   Number of months: 9.
     Total C:                           $450             $
 2. Equipment and Supplies.
    Computer PC/AT 386  ($950).
     Total equipment and supplies:      $950           $
 3. International Travel.   (Travel of one participant (with
report) on  26 EGAS Annual International Conference on
   Atomic  Spectroscopy which will be held in
   Barselona, Spain in July 1994).
    Total International Travel:        $550.                $
 4. Other Direct Costs.
   a. Matherials and Supplies
   (Purchase of Typewriter ($200) and
Minicalculatirs ($50))
    Total A                             $250             $
  B. Communications
   (Expenses connected with preparation and sending
     scientific papers. Reception of foreign scientists)
                                        $250              $
  C. Internal Travels
  (Participation in the domestic conferences on atomic,
   molecular physics and laser physics)
                                         $150           $

    Total Other Direct Costs             $650           $
  5. Total Direct Costs (1+2+3+4)        $8000          $
  6. Total Indirect Costs (25%*Line5)    $2000          $
  7. Total Direct and Indirect Costs     $10000         $
                   PROPOSAL BUDGET on 1995.
               ISF LONG-TERM RESEARCH GRANTS PROGRAM.
   Principal Investigator's Name:           Proposal Number:
   Sherstyuk A.I.
 1. Individual Finansical                Funds     Funds
    Support                            Requested   Granted
                                       by Proposer by ISF
  A. Principal Investigator.
    Amount per month: $300.
    Number of months  : 12.
        Total A:                     $3600            $
___B. Other investigators
   1. Solov'eva G.S.(She will be calculating
   on the base of Sturmian-like expansions
   approach to precise values of various atomic
   parameters (e.g. polarizabilities, multiphoton
   transitions probabilities and so on) with accounting
   of correlation and relativistic effects).
   Amount per month     $150
   Number of Months     12
      Total 1B                        $1800              $
 C. Student
 1. Bardjan E.A. (He will be taking part in the
   investigation of properties of generalized coherent states
   constructed with the aid of Sturmian eigenfunctions
   and it's application to the semi-classicaL l calculation)
   Amount per month    $50
    Number of months    9
    Total 1C.                         $450              $
    Total Individual Finansical
    Support                           $5850              $
 2. Equipment and Supplies
    Facsimile machine ($600)
  Total Equipment and Supplies         $600               $
 3. International Travel
    Travel of one participant on 27 EGAS Annual International
Conference on Atomic Spectroscopy.
   July 1995.
   Total International Travel         $450               $

 4.Other Direct Costs.
 A.Materials and Supplies.
 (Purchase of Typewriter)            $200                $
 B.Communications.
 (Expences connected with the preparation and
 sending of scientific papers. Reception of the
 foreign scientists)                  $200               $
 C.Internal Travels.
  (Participation in the domestic conferences
  on atomic and molecular physics)    $150               $
  Total Other Direct Costs            $550               $
 5.Total Direct Costs (1+2+3+4)       $7450              $
 6.Total Indirect Costs (25%xLine5)   $1862              $
 7.Total Direct and Indirect
   Costs (5+6)                        $9312              $
                Attachment c.
   Biographical sketch of Sherstyuk A.I.(PI)
  I was born in Leningrad in 1937. Married. I have a son of
eleven years old. I was graduated as theoretical physicist
from Physics Department of Leningrad State University in 1960.
Since 1961 I am working in S.I.Vavilov State Optical
Institute in St.-Petersburg (Leningrad).
  My scientific work has been devoted to theoretical investi
gations in varied directions of fundamental and applied
researches,mainly in theoretical atomic spectroscopy,optics,
magnetic resonance.  At present,the main direction of my work
is development and application of new mathematical methods of
calculations of structure and physical parameters of atomic
and molecular systems, namely:1. The calculations of
various atomic and molecular properties with the use of new
approach based on the generalization of Sturmian expansion
method to many-electron systems. 2. The development of new
methods of the summation of the divergent perturbation theory
series and application of them to calculations of
quasistationary and Rydberg states of atomic systems in the
strong external fields.
  Now I am Doctor of Science,leading researcher,head of
research group in the Laboratory of atomic and molecular
spectroscopy of S.I.Vavilov State Optical Institute.I am
member of scientific Council on Theoretical Physics at St.-
Petersburg State University. I have over 100 scientific
publications on various theoretical topics in atomic,molecular
and solid state physics.
  Biographical sketch of Solov'eva G.S.
  I was born in Leningrad in 1944. I was graduated from
Physics Department of Leningrad State University in 1967.
I am working in S.I.Vavilov State Optical Institute.
  My scientific work was devoted to theoretical investigations
of  electronic-vibrational spectra of molecules. Now the  main
direction of my work is theoretical
calculations of structure and physical parameters of atoms
and atomic ions.
   At  present  I am working as scientific researcher  in  the
Laboratory of atomic and molecular spectroscopy S.I.Vavilov
State Optical Institute. Kandidat of Physics and Mathematics
from 1987. I have 22 scientific publications in various topics
of atomic and molecular physics.
                     Attachment d.
  List of Publications of Sherstyuk A.I. (PI).
1.Gruzdev P.F.,Solov'eva G.S.,Sherstyuk A.I. Calculation of
  dipole polarizabilities of the ground states of Ne and Ar
  Optika i spectroscopia,1988,64,976-982.
2.Firsova N.E.,Sherstyuk A.I.On properties of generalized
  eigenvalue problems related to the Schredinger equation.
  Teoreticheskaya i matematicheskaya fizika,1989,81,59-68.
3.Afavasjeva N.V.,Sherstyuk A.I. Study of Alkali atoms by
  the model potential.Optika i spectroskopia,1990,68,
  1225-1231.
4. Gruzdev P.F.,Solov'eva G.S.,Sherstyuk A.I.Use  of the
   expansions on discrete basis of the Hartree-Fock
   virtual Sturmian-type orbitals for evaluation of many
   electron atoms with external fields.Izvestiya vysshih
   uchebnykh zavedenii seriya fizika,1990,33,73-85.
5. Gruzdev P.F.,Solov'eva G.S.,Sherstyuk A.I.The
   polarizabilities of excited states of Na and K.
   Optika i spektroskopiya,1991,71,888-893.
6. Sherstyuk A.I.Perturbation of bound states of a
   Dirac equation for an electron in a central-symmetry
   field.Zhurnal eksperimentalnoi i teoreticheskoi fiziki,
   1972,62,1238-1247.
7. Sherstyuk A.I. On the possibility of elimination of
   continuous spectrum in calculation of electronic states
   of hydrogen molecular ion.I.Optika i spectroskopiya,1975,
   38,1040-1042; III,ibid,1977,43,843-849.
8. Sherstyuk A.I.,Gruzdev P.F.On the use of Sturmian expan-
   sions in Hartree-Fock method.Optika i spectroskopiya,1977
   42,1198-1200.
9.  Sherstyuk A.I.Sturmian spectral representations of Green's
functions in many-fermion theory. Pisma v zhurnal
   eksperimental'noi i teoreticheskoi fiziki,1983,38,550-
   553.
10. Sherstyuk A.I.Sturmian expansions in the many-fermion
    problem.Teoreticheskaya i matematicheskaya fizika,1983,
    56,272-287.

       List of Publications of Solov'eva G.S.
1. Gruzdev P.F.,two co-authors.Calculation of dipol
   polarizabilities of Ne and Ar in RPAE with the use of
   Sturmian virtual Hartree-Fock self-consistent field
   orbitales.Optika i spectroskopya,1988,64,976-982.
2. Gruzdev P.F.,two co-authors.Use of the expansions in
   discrete basis of the Hartree-Fock virtual Sturmian
  -type orbitals for evaluation of interaction with
   external fields.Izvestiya vysshih uchebnykh zavedenii
   seriya fizika,1990,33,73-85.
3. Gruzdev P.F.,two co-authors. The polarizabilities of
   excited states of Na and K. Optika i spectroskopiya,
   1991,71,888-893.






                   Attachment e.

                OTHER SOURCES OF SUPPORT
             Investigator's Name: Sherstyuk A.I.
     1.Support:Pending.
     Project: Development of novel methods for calculations of
many-electron systems in a strong external field with the use
of improved summation procedure in high-order perturbation
theory.
   Source of support: American Physical Society.
   Annual Rate: $500.
   Period Covered: 1993.
   Location of Research: S.I.Vavilov State Optical Institute.
     2.Support: Pending.
   Project: Mathematical investigation of the generalized
eigenvalue problem with various weight operators.
  Source of Support: American Mathematical Society.
  Awared Amount: $50.
  Period Covered: 1993.
  Location of Research: S.I.Vavilov State Optical Institute.
     3.Support: Current.
  Source of Support: St.Petersburg Physical Society.
  Project: Squarre-integrable basis for the calculations of
above-threshold multiphoton transitions.
  Award Amount: $10.
  Period Covered: 1993.
  Location oof Research: S.I.Vavilov State Optical Institute
     4. Support: Current.
  Source of Support: International Science Foundation.
  Projecy: Development of novel methods of quantum mechanical
calculation and application of them to the precise
calculations of various atomic and molecular properties.
Awared Amount: $500.
  Perios Covered: 1993.
  Location of Research: S.I.Vavilov State Optical Institute.

  Investigator's Name: Solov'eva G.S.
  Have not other sources of support.
  Investigator's Name: Bardjan E.A.
  Have not other sources of support.

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