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Publications


97Werner Scheid and Barnabás Apagyi
Quantum inversion with elastic phase shifts to discrete different energies
International J. of Modern Physics E 23, 1450077 (2014)
96Tamás Pálmai and Barnabás Apagyi
The inverse scattering problem at fixed energy based on the Marchenko equation for an auxiliary Sturm-Liouville operator
J. Phys. A: Math. Theor. 46 045303 (2013)
95Tamás Pálmai and Barnabás Apagyi
Fixed energy potentials through an auxiliary inverse eigenvalue problem
Inverse Problems 28 085007 (2012)
94Gábor Csire and Barnabás Apagyi
Macroscopic quantum superpositon states of two-component Bose-Einstein condensates
Phys. Rev. A 85, 033613 (2012)
93Tamás Pálmai, Barnabás Apagyi
Quantum mechanical inverse scattering problem at fixed energy: a constructive method
Methods and Applications of Analysis 18 (2011) pp. 93-104
92Werner Scheid and Barnabás Apagyi
DISCUSSION OF QUANTUM INVERSE SCATTERING PROBLEMS FOR COUPLED CHANNELS AT FIXED ENERGY
International J. of Modern Physics E 20, 1765-73 (2011)
91Tamás Pálmai and Barnabás Apagyi
Interlacing of positive real zeros of Bessel functions
Journal of Mathematical Analysis and Applications 375 (2011) 320
90Gábor Csire, Dániel Schumayer, and Barnabás Apagyi
Effect of scattering lengths on the dynamics of a two-component Bose-Einstein condensate
Phys. Rev. A 82, 063608 (2010)
89Daniel Hilk, Werner Scheid, Tamas Palmai and Barnabas Apagyi
Study of the Cox-Thompson inverse scattering method with a Coulomb potential
J. Phys. A: Math. Theor. 43 (2010) 225302
88Tamás Pálmai and Barnabás Apagyi
On non-singular potentials of Cox-Thompson inversion scheme
J. Math. Phys. 51 (2010) 022114
87Tamás Pálmai, Barnabás Apagyi and Werner Scheid
Development of a Cox-Thompson inverse scattering method to charged particles
J. Phys. G: Nucl. Part. Phys. 37 (2010) 025101
86Barnabás Apagyi and Werner Scheid
Quantum inverse scattering problem for coupled channels
Modern Physics Letters B (MPLB) Volume: 22, Issue: 23, Page 2241 - 2256 (2008)
85Tamás Pálmai, Miklós Horváth and Barnabás Apagyi
Semi-analytic equations to the Cox-Thompson inverse scattering method at fixed energy for special cases
Modern Physics Letters B (MPLB) Volume: 22, Issue: 23, Page 2191 - 2199 (2008)
84Miklós Horváth and Barnabás Apagyi
Solution of the inverse scattering problem at fixed energy for potentials being zero beyond a fixed radius
Modern Physics Letters B (MPLB) Volume: 22, Issue: 23, Page 2137 - 2149 (2008)
83Péter Varga and Barnabás Apagyi
Phase estimation procedure to solve quantum-mechanical eigenvalue problems
Phys. Rev. A 78, 022337 (2008)
82T. Palmai, M. Horvath and B. Apagyi
Simplified solutions of the Cox-Thompson inverse scattering method at fixed energy
J. Phys. A: Math. Theor. 41 (2008) 235305
81D. Schumayer, O. Melchert, W. Scheid and B. Apagyi
Effective Rb-Rb inter-atomic potential from ultracold Bose-gas collision
J. Phys. B: At. Mol. Opt. Phys. 41 (2008) 035302
80Barnabás Apagyi, Werner Scheid, Oliver Melchert and Dániel Schumayer
Interatomic-potential inversion from ultracold Bose-gas collision
Nuclear Physics A, Volume 790, Issues 1-4, 15 June (2007), Pages 767-770
79O. Melchert, W. Scheid and B. Apagyi
Inversion of real and complex phase shifts to potentials by the generalized Cox-Thompson inverse scattering method at fixed energy
J. Phys. G: Nucl. Part. Phys. 32 No 6 (2006) 849-858
78B. Apagyi
Kvantummechanikai potenciálok vizsgálata (tézisek)
BME Elm. Fiz. Tsz. (2005)
77B. Apagyi
Kvantummechanikai potenciálok vizsgálata (disszertáció)
BME Elm. Fiz. Tsz. (2005)
76B. Apagyi and D. Schumayer
Assessment of interspecies scattering lengths a from stability of two-component Bose-Einstein condensates
Eur. Phys. J. B 45, 55-61 (2005)
75Samuel Jesgarz, Barnabas Apagyi and Werner Scheid
Coupled channel inverse scattering problem at fixed energy in Born approximation
J. Phys. A: Math. Gen. 37 8721-8734 (2004)
74Dániel Schumayer and Barnabás Apagyi
Stability of static solitonic excitations of two-component Bose-Einstein condensates in finite range of interspecies scattering length a12
Phys. Rev. A 69, 043620 (2004)
73I. Nagy and B. Apagyi
Stopping power of an electron gas for heavy unit charges: models in the kinetic approximation
ADVANCES IN QUANTUM CHEMISTRY, 46 (2004)
72Barnabás Apagyi, Zoltán Harman and Werner Scheid
Solution of the Cox-Thompson inverse scattering problem using finite set of phase shifts
J. Phys. A: Math. Gen. 36 4815-4826 (2003)
71Dániel Schumayer and Barnabás Apagyi
Relation between optical and atomic solitons
Phys. Rev. A 65, 053614 (2002)
70Dániel Schumayer and Barnabás Apagyi
Painlevé test of coupled Gross-Pitaevskii equations
J. Phys. A: Math. Gen. 34 4969-4981 (2001)
69 B\'athory B, Harman Z, and Apagyi B
Pion-pion potentials by inversion of phase shifts at fixed energy
in {\it Hadrons, Nuclei and Applications} (A. Zichichi ed., World Scientific Publishing Co, 2001) pp. 140--145
68M. Eberspacher, K. Amos, and B. Apagyi
Solution of the inverse scattering problem at fixed energy with nonphysical S matrix elements
Phys. Rev. C 61, 064605 (2000)
67M. Eberspacher, K. Amos, and B. Apagyi
Inverse scattering method for transfer reactions
Phys. Rev. C 62, 064610 (2000)
66B. BáTHORY, S. JESGARZ, W. SCHEID and B. APAGYI
Application of an approximate inversion method to short-ranged potentials
International Journal of Modern Physics E [Nuclear Physics], Vol. 10, No. 2 (2001) 129-139
65M Eberspacher, K Amos, W Scheid and B Apagyi
An approximation method for the solution of the coupled-channels inverse scattering problem at fixed energy
J. Phys. G: Nucl. Part. Phys. 26 1065-1077 (2000)
64I F Barna, B Apagyi and W Scheid
Localization of nonlocal potentials by a Taylor expansion method
J. Phys. G: Nucl. Part. Phys. 26 323-331 (2000)
63Apagyi B and B\'athory
Interactions by inversion
The nucleus. New physics for the new millennium. New Physics 2000. Eds: F.D. Smit, R. Lindsay and S.V. Förtsch. New York, etc., Kluwer Academic / Plenum Publ. 0 (1999)237.-X./ 0.000
62I. Nagy, B. Apagyi, J. I. Juaristi and P. M. Echenique
Consistent model for the screening of slow muons in metals
Phys. Rev. B 60, R12546-R12548 (1999)
61I. Nagy and B. Apagyi
Slow antiprotons in an extended electron system: the one-particle aspects of complete screening
Journal of Molecular Structure: THEOCHEM 501-502 (2000) 495-499
60I. Nagy and B. Apagyi
Scattering-theory formulation of stopping powers of a solid target for protons and antiprotons with velocity-dependent scree
Phys. Rev. A 58, R1653-R1656 (1998)
59Apagyi B, Murányi F, and Voit H
Inversion potentials describing elastic scattering of 12C nuclei at Ec,m = 11.254 and 13.032 MeV
Heavy Ion Physics, 8, 75-87, (1998)
58Eberspacher M, Apagyi B, and Scheid W
: The modified Newton-Sabatier method for the coupled channel inverse scattering problem at fixed energy
Revista Mwxicana de Fisica 43 Suplemento 1, 14-23, (1997)
57Apagyi B, Endrédi G, and Lévay P
A model independent 12C-12C potential
Heavy Ion Physics, 5, 167-178, (1997)
56Lévay P, Apagyi B, and Scheid W
Modified symmetry generators for SO(3,2) and algebraic scattering theory,
Lecture Notes in Physics 488, 354-362, (1997)
55Apagyi B, Lévay P, and Scheid W
Fixed-energy inversion of polarization corrected electron-atom scattering phase-shifts
Lecture Notes in Physics 488. 156-168, (1997)
54Eberspacher M, Apagyi B, and Scheid W
The inverse scattering problem for coupledchannels with the modified Newton-Sabatier method
Lecture Notes in Physics 488, 98-111, (1997)
53Leeb H, Guber H, and Apagyi B
Non-standard information in optical model analyses
Lecture Notes in Physics 488, 75-87, (1997)
52Apagyi B, Endrédi G, and Lévay P (Eds)
Inverse and Algebraic Quantum ScatteringTheory,
Springer, LNP 488, 1-384, (1997)
51M. Eberspacher, B. Apagyi, and W. Scheid
Solution of a Coupled Channel Inverse Scattering Problem at Fixed Energy by a Modified Newton-Sabatier Method
Phys. Rev. Lett. 77, 1921-1924 (1996)
50N. Alexander, K. Amos, B. Apagyi, and D. R. Lun
Nucleon--alpha-particle interactions from inversion of scattering phase shifts
Phys. Rev. C 53, 88-95 (1996)
49Lévay Péter and Apagyi Barnabás
Modified symmetry generators related to solvable scattering problems
Journal of Mathematical Physics -- December 1995 -- Volume 36, Issue 12, pp. 6633-6646
48Apagyi B and Scheid W
Cluster potentials obtained from differential cross sections at low energies
Physica Scripta T56, 224-7, (1995)
47G. Endrédi and B. Apagyi
Analytical independent-particle model for electron scattering by argon at low energy
Few-Body Systems,Volume 17, Numbers 2-4 ,199 - 209 ,June 1994
46Barnabás Apagyi, Alexander Schmidt, Werner Scheid, and Helmut Voit
12C+12C elastic scattering potentials obtained by unifying phase-shift analysis with the modified Newton-Sabatier inverse method
Phys. Rev. C 49, 2608\x{2013}2617 (1994)
45Apagyi B and Scheid Werner
Energy dependence of the inverted scattering potentials of the 12C + 12C system in the range Ecm=8--12 MeV
Porceeings of the NATO Advanced Study Institute on Frontier Topics in Nuclear Physics. Aug.24 - Sept.4,1993. New York, London, Plenum Press. NATO ASI Series. Ser.:B Physics 334 (1994) 419
44Apagyi B, Ladanyi K, Levay P, and Nagy I
Theoretical models and methods ofscattering theory: Developments and applications,
Per. Polytechnica 1 (1993) 225--37
43Apagyi Barnabás and Lévay Péter
Electron-atom scattering potentials obtained by inversion at fixed energy
Lecture Notes in Physics 427, 252-265, (1993)
42István Nagy, Barnabás Apagyi, Károly Ladányi
A Thomas-Fermi-Weizsäcker approach to the total positron annihilation in electron gas
Solid State Communications ,Volume 86, Issue 4, Pages 209-271 (April 1993)
41Péter Lévay and Barnabás Apagyi
Algebraic scattering theory and the geometric phase
Phys. Rev. A 47, 823\x{2013}830 (1993)
40Károly Ladányi, István Nagy and Barnabás Apagyi
Partially linearized Thomas-Fermi-Weizsäcker theory for screening and stopping of charged particles in jellium
Phys. Rev. A 45, 2989-2997 (1992)
39Apagyi B
The modified Newton-Sabatier and its application to derive optical potentials from scattering data
in Workshop on Inverse Problems and Quatum Systems ed. Ken Amos, The School of Physics, University of Melbourne (1992) 1--19
38B Apagyi, A Ostrowski, W Scheid and H Voit
Phase shift analysis and inversion to a potential for 12C+12C elastic scattering at ECM=9.50 and 11.38 MeV
J. Phys. G: Nucl. Part. Phys. 18 195-204 (1992)
37Barnabás Apagyi, Péter Lévay and Károly Ladányi
Spurious singularities in the generalized Newton variational method
Phys. Rev. A 44, 7170\x{2013}7178 (1991)
36Nagy I, Apagyi B, and Lad\'anyi K
On the stopping power of an electron gas for a slow proton and antiproton
in Interaction of charged particles with solids and surfaces interaction of Charged Particles with Solids and Surfaces, eds. A. Gras-Martí, H. Urbassek, N. R. Arista and F. Flores (Plenum Press, New York 1991) pp. 395-399.
35István Nagy, Barnabás Apagyi and Károly Ladányi
Stopping power of an electron gas for a slow antiproton
Phys. Rev. A 42, 1806\x{2013}1808 (1990)
34B Apagyi, K -E May, T Hauser and W Scheid
Search for a non-local potential from a local potential obtained with elastic scattering phase shifts of the algebraic scattering theory
J. Phys. G: Nucl. Part. Phys. 16 451-460 (1990)
33Apagyi B and Nagy I
Variational approach to the scattering theory and its application in stopping phenomena
Proceedings of the 12th Werner Brandt Int. Conf on the ''Penetration of charged particles in matter'' 4--7 September (1989) San Sebastian, Spain, pp. 125--138
32P Levay and B Apagyi
Numerical comparison of the Kohn and Schwinger variational methods with Ladanyi's approach for potential scattering
J. Phys. B: At. Mol. Opt. Phys. 21 3741-3752 (1988)
31Károly Ladányi, Péter Lévay and Barnabás Apagyi
Finite-basis-set expansion methods for scattering problems
Phys. Rev. A 38, 3365\x{2013}3371 (1988)
30B Apagyi and I Nagy
A two-parameter model for the screening of a proton in an electron gas
J. Phys. C: Solid State Phys. 21 3845-3849 (1988)
29Barnabás Apagyi, Péter Lévay and Károly Ladányi
Anomalies of the Schwinger phase shifts in the static exchange approximation
Phys. Rev. A 37, 4577\x{2013}4581 (1988)
28B Apagyi and I Nagy
A simple calculation of the stopping power of an electron gas for slow protons
J. Phys. C: Solid State Phys. 20 1465-1468 (1987)
27Apagyi B, Ladányi K and Lévay P
Application of the multichannel LVM-ST to themodified Huck problem,
Suppl. To Research Report of Laboratory of Nuclear Science, Tohoku University, 19, 164-165, (1986)
26Barnabás Apagyi and Károly Ladányi
Least-squares method in scattering theory
Phys. Rev. A 33, 182\x{2013}190 (1986)
25Apagyi B and Ladányi K
Least-squares technique for multichannel scattering
Proceeding of the Xth Europian Symposium on the Dynamics of Few-Body Systems, Balatonfüred, (1985) 1--3
24B Apagyi and W Scheid
Application of the Dini expansion method to the evaluation of non-local coupling potentials
J. Phys. G: Nucl. Phys. 10 791-804 (1984)
23Apagyi B
A magszerkezet szerepe többnukleont átadó magreakciókban,
Magyar Fizikai Foly\'oirat 31 (1983) 273--336
22B Apagyi and W Scheid
Taylor expansion for the localisation of non-local potentials for coupled-channel calculations
J. Phys. G: Nucl. Phys. 9 73-84 (1983)
21Apagyi B
Magmolekula-állapotok leirása cluster--modellel
Mûszaki fizika, atomtechnika (szerk. Láng L és Keömley G, ISBN 963 7653 53 8, 1983) 57--66
20Apagyi B
Magmolekulák
Fizikai Szemle 31 (1981) 441--449
19Apagyi B and Vertse T
DWBA calculation of the cross section of the12C(6Li,d)16O*[0+,6.05 MeV] reaction
Acta Physica Hung. 51, 171-176 (1981)
18Olaf Krause, Barnabas Apagyi and Werner Scheid
Multipole expansion of non-local coupling potentials for cluster transfer and application to 16O(16O, 12C)20Ne
Nucl. Phys. A364, 159-188, (1981)
17Apagyi B and Vertse T
Configuration mixing effect in the 12C(6Li,d)16O* alpha-transfer reaction
Phys. Rev. C 21, 779\x{2013}783 (1980)
16Apagyi B and Vertse T
Configuration mixing effect in the alpha-transfer reactions
in Proceedings of the Symposium on ''Selected topics in nuclear reaction mechanism'' held in Gaussig/Dresden ZfK--382 (1979) 118--120
15B Apagyi
Analysis of the alpha-spectroscopic amplitudes of 16O
J. Phys. G: Nucl. Phys. 4 1859-187 (1978)
14Kapuy E és Apagyi B
A Kvantumelméleti Kutató Csoport kutatási tevékenysége
BME Fizikai Int\'ezet kutat\'omunk\'aja 1972--1977 (1977) 1--8
13Apagyi B
On the spectroscopic amplitudes of nuclear states
Periodica Politechnica 21 (1977) 161--163
12Apagyi B and Vertse T
Study of the coherence effect in a direct alpha transfer reaction
Proceedings of the Int. Conf. ''Reaction models '77'' ed. Csernai L pp 219--225 (1977)
11B Apagyi and G Fai
Alpha -spectroscopic amplitudes of 16O in the Zuker, Buck and McGrory shell model
J. Phys. G: Nucl. Phys. 3 L163-L167 (1977)
10B. Apagyi, G. Fái and J. Németh
Calculation of the parity violating alpha-decay width of 16O
Nuclear Physics A, Volume 272, Issue 2 , 16 November 1976, Pages 317-326
9B. Apagyi, G. Fái and J. Németh
Alpha decay of light nuclei
Nuclear Physics A Volume 272, Issue 2 , 16 November 1976, Pages 303-316
8Apagyi B
Az alfa-bomlás elmélete és alkalmazásai
Magyar Fizikai Folyóirat 24 (1976) 1--43
7Apagyi B, Fái G and Németh J
Regular and irregular alpha decay of 16O
Proc. of the ''Symposium on Nuclear Structure''1--7 September (1975) Balatonfüred, Hungary
6Apagyi B, Fái G and Németh J
Calculation of the multishell matrix element of the parity violation potential between shell model states of nucleus 16O
ITP--Budapest Report No.353 (1975)
5Apagyi B
4-nukleon transzfer reakciók
''Nehézion ütközések'' Magfizikus Nyári Iskola (1975) 92--114 ISBN 963 371 033 2
4Fái G, Németh J and Apagyi B
Parity-forbidden alpha decay of 16O
ATOMKI Közlemények, Suppl. 16 (1974) 129--140
3Apagyi B
Atomic energy calculation by a modified statistical theory
Acta Physica Hungarica 33, 23-31, (1973)
2Apagyi B
Szupernova robbanások
Fizikai Szemle 22 (1972) 295--3
1Apagyi B
Szupernova robbanások dinamikája
Fizikai Szemle 20 (1970) 134--143