Reentrant phase behavior in systems with density-induced tunneling
- URL: http://arxiv.org/abs/2308.16423v1
- Date: Thu, 31 Aug 2023 03:24:28 GMT
- Title: Reentrant phase behavior in systems with density-induced tunneling
- Authors: A. Krzywicka T. P. Polak
- Abstract summary: We study a quantum bosonic two-dimensional many body system with extended interactions between particles.
Analytical calculations show that the system can be driven out of its coherent state, which is prevalent among commonly used setups.
The breakdown of quantum coherence is inevitable, but can be misinterpreted if one assumes improper coupling between the constituents of the many particle system.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Open many body quantum systems play a paramount role in various branches of
physics, such as quantum information, nonlinear optics or condensed matter. The
dissipative character of open systems has gained a lot of interest especially
within the fields of quantum optics, due to unprecedented stabilization of
quantum coherence, and quantum information, with its desire to control
environmental degrees of freedom. We look beyond the typical mechanism of
dissipation associated with an external source and show that strongly
interacting many particle systems can create quantum decoherence within
themselves. We study a quantum bosonic two-dimensional many body system with
extended interactions between particles. Analytical calculations show that the
system can be driven out of its coherent state, which is prevalent among
commonly used setups. However, we also observe a revival of the superfluid
phase within the same framework for sufficiently large interaction strength.
The breakdown of quantum coherence is inevitable, but can be misinterpreted if
one assumes improper coupling between the constituents of the many particle
system. We show an adequate path to retrieve physically relevant results and
consider its limitations. The system displays a natural cutoff that enforces
the breakdown of superfluidity.
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