• 2099 Citations
  • 24 h-Index
1955 …2013
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Research Output 1955 2013

  • 2099 Citations
  • 24 h-Index
  • 109 Article
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Article
2013

Condensation of quasiparticles and density modulation beyond the superfluid critical velocity

Süto, A. & Szépfalusy, P., Oct 29 2013, In : Physical Review A. 88, 4, 043640.

Research output: Contribution to journalArticle

critical velocity
condensation
modulation
condensates
ground state
2012

Calculation of the even-odd energy difference in superfluid Fermi systems using the pseudopotential theory

Csords, A., Homa, G. & Szépfalusy, P., Feb 2012, In : EPL. 97, 3, 37005.

Research output: Contribution to journalArticle

pseudopotentials
atoms
energy
5 Citations (Scopus)

Three-fluid hydrodynamics of spin-1 Bose-Einstein condensates

Szirmai, G. & Szépfalusy, P., May 4 2012, In : Physical Review A. 85, 5, 053603.

Research output: Contribution to journalArticle

Bose-Einstein condensates
hydrodynamics
fluids
gases
hydrodynamic equations
2010
13 Citations (Scopus)

Gradient corrections to the local-density approximation for trapped superfluid Fermi gases

Csordás, A., Almásy, O. & Szépfalusy, P., Dec 8 2010, In : Physical Review A. 82, 6, 063609.

Research output: Contribution to journalArticle

gradients
approximation
gases
Thomas-Fermi model
Green's functions
2008
4 Citations (Scopus)

Variational wave functions for homogenous Bose systems

Süto, A. & Szépfalusy, P., Feb 5 2008, In : Physical Review A. 77, 2, 023606.

Research output: Contribution to journalArticle

wave functions
vacuum
energy
bosons
operators
2007
1 Citation (Scopus)

Cluster states of fermions in the single l-shell model

Csordás, A., Szöke, É. & Szépfalusy, P., Apr 2007, In : European Physical Journal D. 42, 1, p. 113-124 12 p.

Research output: Contribution to journalArticle

fermions
ground state
atoms
traps
wave functions
1 Citation (Scopus)

New universal quantities characterizing inhomogeneous Fermi gases at the Feshbach resonance

Csordás, A., Almásy, O. & Szépfalusy, P., Dec 1 2007, In : EPL. 80, 5, 50002.

Research output: Contribution to journalArticle

gases
gradients
approximation
10 Citations (Scopus)

Phases of a polar spin-1 Bose gas in a magnetic field

Kis-Szabó, K., Szépfalusy, P. & Szirmai, G., May 7 2007, In : Physics Letters, Section A: General, Atomic and Solid State Physics. 364, 5, p. 362-367 6 p.

Research output: Contribution to journalArticle

crossovers
theorems
magnetization
approximation
gases
2005
1 Citation (Scopus)
potential fields
quark models
pions
mesons
fermions
28 Citations (Scopus)
Chiral Symmetry
Sigma Models
Finite Temperature
Restoration
restoration
7 Citations (Scopus)

Phase separation of ferromagnetic spin-1 Bose gases in non-zero magnetic field

Szirmai, G., Kis-Szabó, K. & Szépfalusy, P., Dec 2005, In : European Physical Journal D. 36, 3, p. 281-287 7 p.

Research output: Contribution to journalArticle

approximation
gases
magnetic fields
critical point
equations of state
2004
1 Citation (Scopus)

Clustering of Fermi particles with arbitrary spin

Csordás, A., Szépfalusy, P. & Szoke, É., Mar 5 2004, In : Physical Review Letters. 92, 9, p. 90401 1 p.

Research output: Contribution to journalArticle

contact potentials
BCS theory
wave scattering
fermions
ground state
28 Citations (Scopus)

T-μ phase diagram of the chiral quark model from a large flavor number expansion

Jakovác, A., Patkós, A., Szép, Z. & Szépfalusy, P., Mar 4 2004, In : Physics Letters B. 582, 3-4, p. 179-186 8 p.

Research output: Contribution to journalArticle

quark models
phase diagrams
expansion
softening
broken symmetry
2003
1 Citation (Scopus)

Energies and damping rates of elementary excitations in spin-1 Bose-Einstein-condensed gases

Szirmai, G., Szépfalusy, P. & Kis-Szabó, K., Jan 1 2003, In : Physical Review A - Atomic, Molecular, and Optical Physics. 68, 2, 1 p.

Research output: Contribution to journalArticle

elementary excitations
damping
Feynman diagrams
gases
Green's functions
6 Citations (Scopus)

Energies and damping rates of elementary excitations in spin-1 Bose-Einstein-condensed gases

Szirmai, G., Szépfalusy, P. & Kis-Szabó, K., Aug 2003, In : Physical Review A. 68, 2, p. 236121-2361219 2125099 p.

Research output: Contribution to journalArticle

elementary excitations
damping
gases
Green's functions
condensation
broken symmetry
mesons
scalars
expansion
elementary excitations
6 Citations (Scopus)
Enhancement
thresholds
Pole
augmentation
poles
2002
24 Citations (Scopus)
mesons
broken symmetry
composite materials
thresholds
temperature

Properties of permanentand transient chaos in critical states

Szépfalusy, P., 2002, In : Advances in Chemical Physics. 122, p. 49-51 3 p.

Research output: Contribution to journalArticle

Chaos theory
chaos
19 Citations (Scopus)
Spectral Function
Mesons
Pole
Sector
poles
18 Citations (Scopus)

Structure of the perturbation series of the spin-1 Bose gas at low temperatures

Szépfalusy, P. & Szirmai, G., Apr 2002, In : Physical Review A. 65, 4 B, p. 436021-436025 5 p.

Research output: Contribution to journalArticle

perturbation
approximation
gases
Green's functions
damping
formalism
perturbation
gases
Green's functions
condensation
2001

Conserving and gapless model of the weakly interacting Bose gas

Fliesser, M., Reidl, J., Szépfalusy, P. & Graham, R., Jan 1 2001, In : Physical Review A - Atomic, Molecular, and Optical Physics. 64, 1, 1 p.

Research output: Contribution to journalArticle

autocorrelation
Green's functions
approximation
gases
conservation
22 Citations (Scopus)

Conserving and gapless model of the weakly interacting Bose gas

Fliesser, M., Reidl, J., Szépfalusy, P. & Graham, R., Jul 2001, In : Physical Review A. 64, 1, p. 136091-1360914 1224824 p.

Research output: Contribution to journalArticle

diagrams
gases
formalism
wavelengths
excitation

Kohn mode for trapped Bose gases within the dielectric formalism

Reidl, J., Bene, G., Graham, R. & Szépfalusy, P., 2001, In : Physical Review A. 63, 4, p. 1-6 6 p.

Research output: Contribution to journalArticle

formalism
gases
harmonics
oscillations
temperature
16 Citations (Scopus)

Kohn mode for trapped Bose gases within the dielectric formalism

Reidl, J., Bene, G., Graham, R. & Szépfalusy, P., Apr 2001, In : Physical Review A. 63, 4, p. 436051-436056 6 p., 043605.

Research output: Contribution to journalArticle

formalism
harmonics
oscillations
gases
center of mass

On the production of entropy within the concept of incomplete description of states

Hajdu, J. & Szépfalusy, P., 2001, In : Annalen der Physik (Leipzig). 10, 5, p. 429-433 5 p.

Research output: Contribution to journalArticle

entropy
irreversible processes
transport properties
magnetic permeability
thermodynamics
2000
5 Citations (Scopus)

Critical states of transient chaos

Kaufmann, Z., Németh, A. & Szépfalusy, P., Mar 2000, In : Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics. 61, 3, p. 2543-2550 8 p.

Research output: Contribution to journalArticle

Critical State
chaos
Chaos
Fixed point
Frobenius-Perron Operator
Bose-Einstein condensates
excitation
critical temperature
Green's functions
condensation
6 Citations (Scopus)

Properties of excitations in systems with a spinor Bose-Einstein condensate

Szépfalusy, P. & Szirmai, G., May 2000, In : Physical Review A. 61, 5, p. 516041-516044 4 p.

Research output: Contribution to journalArticle

Bose-Einstein condensates
excitation
critical temperature
Green's functions
condensation
2 Citations (Scopus)
formalism
shift
damping
gases
Bogoliubov theory
61 Citations (Scopus)

Shifts and widths of collective excitations in trapped Bose gases determined by the dielectric formalism

Reidl, J., Csordás, A., Graham, R. & Szépfalusy, P., Apr 2000, In : Physical Review A. 61, 4, p. 436061-4360610 3924550 p.

Research output: Contribution to journalArticle

formalism
shift
damping
gases
Bogoliubov theory
1 Citation (Scopus)

Transient chaos and critical states in generalized baker maps

Kaufmann, Z. & Szépfalusy, P., Oct 2000, In : Journal of Statistical Physics. 101, 1-2, p. 107-124 18 p.

Research output: Contribution to journalArticle

Critical State
chaos
Chaos
Dissipative Systems
Anomalous
1999
49 Citations (Scopus)

Finite-temperature excitations of Bose gases in anisotropic traps

Reidl, J., Csordás, A., Graham, R. & Szépfalusy, P., 1999, In : Physical Review A. 59, 5, p. 3816-3822 7 p.

Research output: Contribution to journalArticle

traps
approximation
gases
excitation
temperature
1998
23 Citations (Scopus)

Dielectric formalism and damping of collective modes in trapped Bose-Einstein condensed gases

Bene, G. & Szépfalusy, P., Nov 1998, In : Physical Review A. 58, 5

Research output: Contribution to journalArticle

damping
formalism
gases
condensates
temperature
22 Citations (Scopus)

Quasiparticle excitations and dynamical structure function of trapped Bose condensates in the WKB approximation

Csordás, A., Graham, R. & Szépfalusy, P., 1998, In : Physical Review A. 57, 6, p. 4669-4685 17 p.

Research output: Contribution to journalArticle

Wentzel-Kramer-Brillouin method
condensates
excitation
inelastic scattering
light scattering
1997
27 Citations (Scopus)

Classical quasiparticle dynamics in trapped Bose condensates

Fliesser, M., Csordás, A., Graham, R. & Szépfalusy, P., 1997, In : Physical Review A. 56, 6, p. 4879-4889 11 p.

Research output: Contribution to journalArticle

condensates
traps
harmonics
function space
spherical coordinates
16 Citations (Scopus)

Diffusion in normal and critical transient chaos

Kaufmann, Z., Lustfeld, H., Németh, A. & Szépfalusy, P., 1997, In : Physical Review Letters. 78, 21, p. 4031-4034 4 p.

Research output: Contribution to journalArticle

chaos
coefficients
diffusion coefficient
trajectories
15 Citations (Scopus)

Semiclassical wave functions and energy levels of Bose-condensed gases in spherically symmetric traps

Csordás, A., Graham, R. & Szépfalusy, P., 1997, In : Physical Review A. 56, 6, p. 5179-5182 4 p.

Research output: Contribution to journalArticle

energy levels
traps
wave functions
Wentzel-Kramer-Brillouin method
gases
1996
17 Citations (Scopus)

Correlation functions on the border lines of transient chaos

Lustfeld, H. & Szépfalusy, P., 1996, In : Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics. 53, 6 SUPPL. A, p. 5882-5889 8 p.

Research output: Contribution to journalArticle

borders
chaos
Correlation Function
Chaos
Line
20 Citations (Scopus)

Off-resonance light scattering from Bose condensates in traps

Csordás, A., Graham, R. & Szépfalusy, P., 1996, In : Physical Review A. 54, 4

Research output: Contribution to journalArticle

resonance scattering
condensates
light scattering
traps
Wentzel-Kramer-Brillouin method
1995
13 Citations (Scopus)

Properties of border states of transient chaos

Németh, A. & Szépfalusy, P., 1995, In : Physical Review E - Statistical, Nonlinear, and Soft Matter Physics. 52, 2, p. 1544-1549 6 p.

Research output: Contribution to journalArticle

Perron-Frobenius
Absolutely Continuous Invariant Measure
One-dimensional Maps
borders
General Solution
1994
10 Citations (Scopus)
Billiards
Phase Space
Ensemble
statistics
Statistics
1993
34 Citations (Scopus)

Statistical properties of chaos demonstrated in a class of one-dimensional maps

Csordás, A., Györgyi, G., Szépfalusy, P. & Tél, T., 1993, In : Chaos. 3, 1, p. 31-49 19 p.

Research output: Contribution to journalArticle

One-dimensional Maps
Chaos theory
Statistical property
chaos
Chaos
1992
3 Citations (Scopus)

Bounds for the Rényi entropies and dynamical phase transitions

Bene, J. & Szépfalusy, P., 1992, In : Physical Review A. 46, 2, p. 801-808 8 p.

Research output: Contribution to journalArticle

entropy
orbits
coordinate transformations
invariance
scaling
1991
16 Citations (Scopus)

Level statistics of a noncompact cosmological billiard

Csordás, A., Graham, R. & Szépfalusy, P., 1991, In : Physical Review A. 44, 3, p. 1491-1499 9 p.

Research output: Contribution to journalArticle

triangles
statistics
tiles
rigidity
eigenvectors
11 Citations (Scopus)

Level statistics of a noncompact integrable billiard

Graham, R., Hübner, R., Szépfalusy, P. & Vattay, G., 1991, In : Physical Review A. 44, 11, p. 7002-7015 14 p.

Research output: Contribution to journalArticle

stairways
statistics
triangles
cosmology
curvature
93 Citations (Scopus)

Multifractal spectra of multi-affine functions

Barabási, A. L., Szépfalusy, P. & Vicsek, T., Oct 1 1991, In : Physica A: Statistical Mechanics and its Applications. 178, 1, p. 17-28 12 p.

Research output: Contribution to journalArticle

Multifractal Spectrum
Affine Function
Multifractal Formalism
Multiscaling
Self-affine

Reduced Renyi information: Generalization and application to a devils staircase

Markosov, M. & Szépfalusy, P., 1991, In : Physical Review A. 43, 6, p. 2709-2713 5 p.

Research output: Contribution to journalArticle

stairways
fractals
partitions
11 Citations (Scopus)

Thermodynamics of Lorenz-type maps

Szépfalusy, P., Tél, T. & Vattay, G., 1991, In : Physical Review A. 43, 2, p. 681-692 12 p.

Research output: Contribution to journalArticle

thermodynamics
scaling
temperature
thermodynamic properties
interactions