Multicritical behavior in dissipative Ising models

authored by

Vincent R. Overbeck, Mohammad F. Maghrebi, Alexey V. Gorshkov, Hendrik Weimer

Abstract

We analyze theoretically the many-body dynamics of a dissipative Ising model in a transverse field using a variational approach. We find that the steady-state phase diagram is substantially modified compared to its equilibrium counterpart, including the appearance of a multicritical point belonging to a different universality class. Building on our variational analysis, we establish a field-theoretical treatment corresponding to a dissipative variant of a Ginzburg-Landau theory, which allows us to compute the upper critical dimension of the system. Finally, we present a possible experimental realization of the dissipative Ising model using ultracold Rydberg gases.

Organisation(s)

Institute of Theoretical Physics
CRC 1227 Designed Quantum States of Matter (DQ-mat)

External Organisation(s)

University of Maryland

Type

Article

Journal

Physical Review A

Volume

95

ISSN

2469-9926

Publication date

26.04.2017

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Electronic version(s)

https://doi.org/10.1103/physreva.95.042133 (Access: Open)