Statistical physics team at LPTMC

TEAM MEMBERS IN COLLABORATION WITH MAJULAB

  • Pascal Viot (Full Professor, SU)
  • Vincent Mancois (PhD student, SU-NTU cotutelle programme,)

Scientific activities with MajuLab

The Statistical physics team at LPTMC (https://www.lpens.ens.psl.eu/nano-optique/?lang=en) with Pascal Viot has developed a collaboration with members of MajuLab:

  • Prof. David Wilkowski Centre for quantum technologies NTU-SPMS (https://www.quantumlah.org/research/group/davidw)
  • Research Fellow Kwong Chang Chi NTU-SMPS (https://www.quantumlah.org/people/profile/changchi).

The scientific activities in collaboration with MajuLab mainly focus on:

  • Cold atom systems can represent self-gravitating systems at a nanometric scale and permit experimental studies, which is not possible for systems in gravitational interaction at the astrophysical scale.

Why and how this collaboration?

In two dimensions, a system of self-gravitating particles is expected to collapse and to form a singularity in finite time below a critical temperature Tc. Pascal Viot and David Wilkowski propose to investigate experimentally a quasi-two-dimensional cloud of cold neutral atoms in interaction with two pairs of perpendicular counterpropagating quasi-resonant laser beams, in order to look for a signature of this ideal phase transition.  They received a SU-PhD Grant for supporting the project. David Wilkowski first realized an experiment for one-dimensional self-gravitating system some years ago and this international mobility project was perfectly in line with the institutional agreements between SU, NTU and MajuLab (CNRS).

Common publications with MajuLab

  1. Two-temperature Brownian dynamics of a particle in a confining potential Vincent Mancois, Bruno Marcos, Pascal Viot,  & David Wilkowski, Phys. Rev. E,  97, 052121, (2018), https://doi.org/10.1103/PhysRevE.97.052121
  2. Anisotropic long-range interaction investigated with cold atoms, Vincent Mancois,Julien Barré, Chang Chi Kwong, Alain Olivetti, Pascal Viot, and David Wilkowski Rev. A. 102013311 (2020), https://doi.org/10.1103/PhysRevA.102.013311