Browsing by Author "Gupta, Shamik"

Now showing items 1-3 of 3

    • Ensemble inequivalence in a mean-field XY model with ferromagnetic and nematic couplings 

      Pikovsky, Arkady; Gupta, Shamik; Teles, Tarcisio Nunes; Benetti, Fernanda Pereira da Cruz; Pakter, Renato; Levin, Yan; Ruffo, Stefano (2014) [Journal article]
      We explore ensemble inequivalence in long-range interacting systems by studying an XY model of classical spinswith ferromagnetic and nematic coupling.We demonstrate the inequivalence bymapping themicrocanonical phase diagram ...

    • Reply to “Comment on ‘Temperature inversion in long-range interacting systems’ ” 

      Teles, Tarcisio Nunes; Gupta, Shamik; Di Cintio, Pierfrancesco; Casetti, Lapo (2016) [Journal article]
      We present evidence that the mechanism proposed in Teles et al. [Phys. Rev. E 92, 020101 (2015)], referred to as the TGDC mechanism, does apply to a model with repulsive mean-field interactions where it produces temperature ...

    • Temperature inversion in long-range interacting systems 

      Teles, Tarcisio Nunes; Gupta, Shamik; Di Cintio, Pierfrancesco; Casetti, Lapo (2015) [Journal article]
      Temperature inversions occur in nature, e.g., in the solar corona and in interstellar molecular clouds: Somewhat counterintuitively, denser parts of the system are colder than dilute ones.We propose a simple and appealing ...