All Stories

  1. Circle packing in arbitrary domains
  2. Quantum particles in a suddenly accelerating potential
  3. Echoes of the hexagon: remnants of hexagonal packing inside regular polygons
  4. Circle packing in regular polygons
  5. An ubiquitous three-term recurrence relation
  6. Spectral sum rules for the Schrödinger equation
  7. On some conditionally solvable quantum-mechanical problems
  8. On the Hellmann-Feynman theorem in statistical mechanics
  9. Quantum particles in a moving potential
  10. Isospectral heterogeneous domains: A numerical study
  11. Weakly (and not so weakly) bound states of a relativistic particle in one dimension
  12. On the straightforward perturbation theory in classical mechanics
  13. Spectral algorithms for multiple scale localized eigenfunctions in infinitely long, slightly bent quantum waveguides
  14. Bound states in weakly deformed waveguides: numerical versus analytical results
  15. High order analysis of the limit cycle of the van der Pol oscillator
  16. Exact sum rules for quantum billiards of arbitrary shape
  17. BOUND STATES IN WEAKLY DEFORMED WAVEGUIDES: NUMERICAL VERSUS ANALYTICAL RESULTS
  18. A quantum-mechanical anharmonic oscillator with a most interesting spectrum
  19. Weakly Bound States in Heterogeneous Waveguides: A Calculation to Fourth Order
  20. Perturbation theory for short-range weakly-attractive potentials in one dimension
  21. Comment on “Thomson rings in a disk”
  22. Comment on: “Ground state energies from converging and diverging power series expansions”, Ann. Phys. 373 (2016) 456–469
  23. Weakly bound states in heterogeneous waveguides
  24. High order eigenvalues for the Helmholtz equation in complicated non-tensor domains through Richardson extrapolation of second order finite differences
  25. Heterogeneous systems in d dimensions: lower spectrum
  26. On the symmetry of three identical interacting particles in a one-dimensional box
  27. HETEROGENEOUS SYSTEMS IN DIMENSIONS: LOWER SPECTRUM
  28. Advanced Modern Physics
  29. Comment on: ‘PT-/non-PT-symmetric and non-Hermitian Hellmann potential: approximate bound and scattering states with any ℓ -values’
  30. Small-energy series for one-dimensional quantum-mechanical models with non-symmetric potentials
  31. Non-Hermitian oscillators withTdsymmetry
  32. Is space-time symmetry a suitable generalization of parity-time symmetry?
  33. Exact sum rules for inhomogeneous systems containing a zero mode
  34. Topics in Modern Physics
  35. Accurate calculation of the solutions to the Thomas–Fermi equations
  36. PT-symmetric strings
  37. Exact sum rules for inhomogeneous strings
  38. One cannot hear the density of a drum (and further aspects of isospectrality)
  39. Exact sum rules for inhomogeneous drums
  40. Introduction to Modern Physics
  41. Comment on ‘Numerical estimates of the spectrum for anharmonic PT symmetric potentials’
  42. Mathematical analysis of recent analytical approximations to the collapse of an empty spherical bubble
  43. Solution to the equations of the moment expansions
  44. Particle correlation from uncorrelated non Born–Oppenheimer SCF wavefunctions
  45. A perturbative approach to the spectral zeta functions of strings, drums, and quantum billiards
  46. Bound states for the quantum dipole moment in two dimensions
  47. Bound states in open-coupled asymmetrical waveguides and quantum wires
  48. Accurate calculation of the bound states of the quantum dipole problem in two dimensions
  49. Accurate calculation of the eigenvalues of non-uniform strings and membranes
  50. High-order connected moments expansion for the Rabi Hamiltonian
  51. Further analysis of the connected moments expansion
  52. The string of variable density: Further results
  53. Spectroscopy of annular drums and quantum rings: Perturbative and nonperturbative results
  54. Comment on ‘Coupled anharmonic oscillators: the Raileigh–Ritz approach versus the collocation approach’
  55. Collocation method for fractional quantum mechanics
  56. The string of variable density: Perturbative and non-perturbative results
  57. Can one hear the density of a drum? Weyl's law for inhomogeneous media
  58. Spectroscopy of drums and quantum billiards: Perturbative and nonperturbative results
  59. Collocation approach to the Helmholtz eigenvalue problem on multiply connected domains
  60. Variational collocation for systems of coupled anharmonic oscillators
  61. One-dimensional oscillator in a box
  62. Rayleigh–Ritz variation method and connected-moments expansions
  63. The virial theorem for nonlinear problems
  64. A new method for studying the vibration of non-homogeneous membranes
  65. Collocation on uniform grids
  66. Eigenvalues from power-series expansions: an alternative approach
  67. Solving the Helmholtz equation for membranes of arbitrary shape: numerical results
  68. Accurate calculation of the complex eigenvalues of the Schrödinger equation with an exponential potential
  69. Inversion of the perturbation series
  70. Variational collocation on finite intervals
  71. Alternative implementation of Padé approximants
  72. Dalgarno–Lewis perturbation theory for scattering states
  73. Gravitational lensing from compact bodies: Analytical results for strong and weak deflection limits
  74. Wronskian perturbation theory
  75. Comment on “Quantization of Friedmann-Robertson-Walker spacetimes in the presence of a negative cosmological constant and radiation”
  76. Alternative representation for nonlocal operators and path integrals
  77. Development of accurate solutions for a classical oscillator
  78. Convergence acceleration of series through a variational approach
  79. Analytical formulas for gravitational lensing: Higher order calculation
  80. Comment on an application of the asymptotic iteration method to a perturbed Coulomb model
  81. Analytical approximations to the spectra of quark–antiquark potentials
  82. A variational sinc collocation method for strong-coupling problems
  83. The IX Mexican Workshop on Particles and Fields
  84. Analytical formulas for gravitational lensing
  85. Dispersion relation of the nonlinear Klein-Gordon equation through a variational method
  86. Alternative perturbation approaches in classical mechanics
  87. One-loop integrals at finite temperature
  88. Asymptotic and exact series representations for the incomplete Gamma function
  89. A new approximation method for time-dependent problems in quantum mechanics
  90. Comparison of alternative improved perturbative methods for nonlinear oscillations
  91. Exact and approximate expressions for the period of anharmonic oscillators
  92. Improved Lindstedt–Poincaré method for the solution of nonlinear problems
  93. The period of a classical oscillator
  94. Systematic perturbation calculation of integrals with applications to physics
  95. Comparative study of quantum anharmonic potentials
  96. High order analysis of nonlinear periodic differential equations
  97. A new method for the solution of the Schrödinger equation
  98. COLOUR SUPERCONDUCTIVITY IN FINITE SYSTEMS
  99. Presenting a new method for the solution of nonlinear problems
  100. Pion dispersion relation at finite density and temperature
  101. Colour Superconductivity in Finite Systems
  102. Color superconductivity in finite systems
  103. Quark distribution functions in nuclear matter
  104. Contrasting and parity-violating asymmetries in nuclei
  105. Relativistic Hamiltonians in many-body theories