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Multicritical behavior in dissipative Ising models

TitleMulticritical behavior in dissipative Ising models
Publication TypeJournal Article
Year of Publication2017
AuthorsV. R. Overbeck, M. F. Maghrebi, A. V. Gorshkov, and H. Weimer
JournalPHYSICAL REVIEW A
Volume95
Date PublishedAPR 26
ISSN2469-9926
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.

DOI10.1103/PhysRevA.95.042133