A B O U T   M E
Mgr. Roman Krčmár, PhD

   Position: senior researcher IIA
   E-mail: roman.krcmar@savba.sk
   Tel. (+421 2) 20910703
   Office 109
   Personal webpage: http://quantum.physics.sk/

List of publications
  1. Roman Krčmár, Andrej Gendiar, Tomotoshi Nishino:
    Entanglement-entropy study of phase transitions in six-state clock model | pdf |
    Acta Physica Polonica A 137, 598-600 (2020) [arXiv:2003.10718]
  2. Eva Pospíšilová, Roman Krčmár, Andrej Gendiar, Ladislav Šamaj:
    Full nonuniversality of the symmetric 16-vertex model on the square lattice | pdf |
    Physical Review E 102, 012125 (2020) [arXiv:2002.02757]
  3. Hiroshi Ueda, Kouichi Okunishi, Kenji Harada, Roman Krčmár, Andrej Gendiar, Seiji Yunoki, Tomotoshi Nishino:
    Finite-m scaling analysis of Berezinskii-Kosterlitz-Thouless phase transitions and entanglement spectrum for the six-state clock model | pdf |
    Physical Review E 101, 062111 (2020) [arXiv:2001.10176]
  4. Roman Krčmár, Jozef Genzor, Yoju Lee, Hana Čenčariková, Tomotoshi Nishino, and Andrej Gendiar:
    Tensor-network study of quantum phase transition on Sierpiński fractal | pdf |
    Phys. Rev. E 98, 062114 (2018) [arXiv:1711.11401]
  5. Roman Krčmár and Ladislav Šamaj:
    Original electric-vertex formulation of the symmetric eight-vertex model on the square lattice is fully nonuniversal | pdf |
    Phys. Rev. E 97, 012108 (2018)
  6. Hiroshi Ueda, Kouichi Okunishi, Roman Krčmár, Andrej Gendiar, Seiji Yunoki, Tomotoshi Nishino:
    Critical behavior of the two-dimensional icosahedron model | pdf |
    Phys. Rev. E 96, 062112 (2017) [arXiv:1709.01275]
  7. Roman Krčmár and Ladislav Šamaj:
    Critical properties of the eight-vertex model in a field | pdf |
    Europhysics Letters 115, 56001 (2016)
  8. Roman Krčmár, Andrej Gendiar, Tomotoshi Nishino :
    Phase diagram of truncated tetrahedral model | pdf |
    Phys. Rev. E 94, 022134 (2016) [arXiv:1512.09059]
  9. Roman Krčmár, Ladislav Šamaj:
    Reentrant disorder-disorder transitions in generalized multicomponent Widom-Rowlinson models | pdf |
    Phys. Rev. E 92, 052103 (2015)
  10. Andrej Gendiar, Michal Daniška, Roman Krčmár, Tomotoshi Nishino:
    Mean-field universality class induced by weak hyperbolic curvatures | pdf |
    Phys. Rev. E 90, 012122 (2014) [arXiv:1403.5377]
  11. Andrej Gendiar, Roman Krčmár, Sabine Andergassen, Michal Daniška, Tomotoshi Nishino:
    Weak correlation effects in the Ising model on triangular-tiled hyperbolic lattices | pdf |
    Phys. Rev. E 86, 021105 (2012) [arXiv:1205.3850]
  12. Roman Krčmár and M. Weyrauch:
    Fermionic functional renormalization group investigation of Luttinger liquids | pdf |
    , Phys. Rev. B 85, 155113 (2012)
  13. A. Gendiar, R. Krčmár, M. Weyrauch:
    The large system asymptotics of persistent currents in mesoscopic quantum rings
    Phys. Rev. B 79, 205118 (2009) [arXiv:0902.4385]
  14. Andrej Gendiar, Roman Krčmár, Tomotoshi Nishino:
    Spherical Deformation for One-dimensional Quantum Systems
    Prog. Theor. Phys. 122 (2009), 953-967 [arXiv:0810.0622]
  15. Moško M., Németh R., Krčmár R., and Indlekofer M.::
    Luttinger liquid and persistent current in a continuous mesoscopic ring with a weak link
    Phys. Rev. B 79, 245323 (2009)
  16. R. Krčmár, T. Iharagi, A. Gendiar, T. Nishino:
    Tricritical point of J1-J2 Ising model on hyperbolic lattice
    Phys. Rev. E 78, 061119 (2008) [arXiv:0807.0150]
  17. Andrej Gendiar, Roman Krčmár, Kouiji Ueda, Tomotoshi Nishino:
    Phase transition of clock models on hyperbolic lattice studied by corner transfer matrix renormalization group method
    Phys. Rev. E 77, 041123 (2008) [arXiv:0801.0836]
  18. Roman Krčmár, Andrej Gendiar, Martin Mosko, Radoslav Nemeth, Pavel Vagner, Lubos Mitas:
    Persistent current of correlated electrons in mesoscopic ring with impurity
    Physica E 40, 1507 (2008) [arXiv:0712.0960]
  19. Roman Krčmár, Andrej Gendiar, Kouji Ueda, Tomotoshi Nishino:
    Ising model on hyperbolic lattice studied by corner transfer matrix renormalization group method
    J.Phys.A 41, 125001 (2008) [arXiv:0712.0461]
  20. K.Ueda, R.Krčmár, A.Gendiar, T.Nishino:
    Corner transfer matrix renormalization group method applied to the ising model on the hyperbolic plane
    J. Phys. Soc. Japan 76, 084004 (2007)
Submitted
  1. Roman Krčmár, Andrej Gendiar, Peter Rapčan, Tomotoshi Nishino:
    Phase transition of the four-dimensional cross-polytope model
    [arXiv:2008.09355]
  2. Roman Krčmár, Mária Zelenayová, Libor Caha, Peter Rapčan, Tomotoshi Nishino, Andrej Gendiar:
    Quantum Potts Models on the Sierpiński Pyramid
    [arXiv:2003.09604]
  3. Roman Krčmár, Andrej Gendiar, Tomotoshi Nishino:
    Phase transition of the six-state clock model observed from the entanglement entropy
    [arXiv:1612.07611]
Unpublished