Related papers: Phase characterization of spinor Bose-Einstein condensates: a Majorana stellar representation approach

Phase characterization of spinor Bose-Einstein condensates: a Majorana stellar representation approach

URL: http://arxiv.org/abs/2211.16428v3
Date: Sun, 11 Jun 2023 16:48:46 GMT
Title: Phase characterization of spinor Bose-Einstein condensates: a Majorana stellar representation approach
Authors: E. Serrano-Ens\'astiga, F. Mireles
Abstract summary: We study the variational perturbations for the mean-field solution of an interacting spinor system with underlying rotational symmetries. An approach based upon the Majorana stellar representation for mixed states and group theory is introduced to this end. We apply it to characterize the phases of a spin-1 Bose-Einstein condensate and to study the behavior of these phases with entropy.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: We study the variational perturbations for the mean-field solution of an interacting spinor system with underlying rotational symmetries. An approach based upon the Majorana stellar representation for mixed states and group theory is introduced to this end. The method reduces significantly the unknown degrees of freedom of the perturbation, allowing us a simplified and direct exploration on emergent physical phenomena. We apply it to characterize the phases of a spin-1 Bose-Einstein condensate and to study the behavior of these phases with entropy. The spin-2 phase diagram was also investigated within the Hartree-Fock approximation, where a non-linear deviation of the cyclic-nematic phase boundary with temperature is predicted.

Related papers

Emerging Non-Hermitian Topology in a Chiral Driven-Dissipative Bose-Hubbard Model [0.0]
We introduce a driven-dissipative Bose-Hubbard chain describing coupled lossy photonic modes. We numerically prove that the steady-state solution is stabilized by an inhomogeneous profile of the driving amplitude. Our work shows the emergence of non-Hermitian topological phases in an interacting model that can be naturally implemented with superconducting circuits.
arXiv Detail & Related papers (2024-11-13T19:00:34Z)
Spin-1 Haldane phase in a chain of Rydberg atoms [0.0]
Protocol to implement a spin-1 chain in Rydberg systems using three Rydberg states close to a F"orster resonance. Phase diagram reveals a highly robust Haldane phase -- a prime example of a symmetry protected topological phase.
arXiv Detail & Related papers (2024-10-28T18:16:20Z)
Measurement induced phase transition in the central spin model: second Rényi entropy in dual space approach [0.0]
We conduct a numerical investigation of the dynamics of the central spin model in the presence of measurement processes. To characterize the measurement-induced phase transition in this system, we employ a recently developed method based on second R'enyi entropy in dual space.
arXiv Detail & Related papers (2024-04-24T08:07:49Z)
Probing quantum floating phases in Rydberg atom arrays [61.242961328078245]
We experimentally observe the emergence of the quantum floating phase in 92 neutral-atom qubits. The site-resolved measurement reveals the formation of domain walls within the commensurate ordered phase. As the experimental system sizes increase, we show that the wave vectors approach a continuum of values incommensurate with the lattice.
arXiv Detail & Related papers (2024-01-16T03:26:36Z)
Geometric phases along quantum trajectories [58.720142291102135]
We study the distribution function of geometric phases in monitored quantum systems. For the single trajectory exhibiting no quantum jumps, a topological transition in the phase acquired after a cycle. For the same parameters, the density matrix does not show any interference.
arXiv Detail & Related papers (2023-01-10T22:05:18Z)
Accessing the topological Mott insulator in cold atom quantum simulators with realistic Rydberg dressing [58.720142291102135]
We investigate a realistic scenario for the quantum simulation of such systems using cold Rydberg-dressed atoms in optical lattices. We perform a detailed analysis of the phase diagram at half- and incommensurate fillings, in the mean-field approximation. We furthermore study the stability of the phases with respect to temperature within the mean-field approximation.
arXiv Detail & Related papers (2022-03-28T14:55:28Z)
Phase diagram of Rydberg-dressed atoms on two-leg square ladders: Coupling supersymmetric conformal field theories on the lattice [52.77024349608834]
We investigate the phase diagram of hard-core bosons in two-leg ladders in the presence of soft-shoulder potentials. We show how the competition between local and non-local terms gives rise to a phase diagram with liquid phases with dominant cluster, spin, and density-wave quasi-long-range ordering.
arXiv Detail & Related papers (2021-12-20T09:46:08Z)
Topological transitions with continuously monitored free fermions [68.8204255655161]
We show the presence of a topological phase transition that is of a different universality class than that observed in stroboscopic projective circuits. We find that this entanglement transition is well identified by a combination of the bipartite entanglement entropy and the topological entanglement entropy.
arXiv Detail & Related papers (2021-12-17T22:01:54Z)
Phase diagram of a distorted kagome antiferromagnet and application to Y-kapellasite [50.591267188664666]
We reveal a rich ground state phase diagram even at the classical level. The presented model opens a new direction in the study of kagome antiferromagnets.
arXiv Detail & Related papers (2021-07-28T18:00:03Z)
Impurity dephasing in a Bose-Hubbard model [0.0]
We study the dynamics of a two-level impurity embedded in a two-dimensional Bose-Hubbard model at zero temperature. Results for the decoherence across the whole phase diagram are presented, with a focus on the critical region close to the transition between superfluid and Mott insulator.
arXiv Detail & Related papers (2020-11-27T14:44:13Z)

This list is automatically generated from the titles and abstracts of the papers in this site.