Zobrazeno 1 - 10
of 2 249
pro vyhledávání: '"R SA"'
Motivated by the experimental observation of spin-charge separation in one-dimensional interacting Fermi gases, we investigate these systems in the presence of spin-orbit coupling and Rabi fields. We demonstrate that spin-charge-separated modes evolv
Externí odkaz:
http://arxiv.org/abs/2405.20255
We discuss standard and tighter upper bounds on the critical temperature $T_c$ of two-dimensional (2D) superconductors and superfluids versus particle density $n$ or filling factor $\nu$ for continuum and lattice systems from the Bardeen-Cooper-Schri
Externí odkaz:
http://arxiv.org/abs/2303.10939
We discuss a two-band model for two-dimensional superconductors with electron and hole bands separated by an energy gap and singlet $d$-wave pairing in each band. This model exhibits a V-shaped to U-shaped transition in the density of the states of t
Externí odkaz:
http://arxiv.org/abs/2303.05017
Autor:
Lundblad, Nathan, Aveline, David C., Balaz, Antun, Bentine, Elliot, Bigelow, Nicholas P., Boegel, Patrick, Efremov, Maxim A., Gaaloul, Naceur, Meister, Matthias, Olshanii, Maxim, de Melo, Carlos A. R. Sá, Tononi, Andrea, Vishveshwara, Smitha, White, Angela C., Wolf, Alexander, Garraway, Barry M.
Publikováno v:
Quantum Sci. Technol. 8, 024003 (2023)
Progress in understanding quantum systems has been driven by the exploration of the geometry, topology, and dimensionality of ultracold atomic systems. The NASA Cold Atom Laboratory (CAL) aboard the International Space Station has enabled the study o
Externí odkaz:
http://arxiv.org/abs/2211.04804
We show that in two-band $s$-wave superfluids it is possible to induce quantum phase transitions (QPTs) by tuning intraband and interband $s$-wave interactions, in sharp contrast to single-band $s$-wave superfluids, where only a crossover between Bar
Externí odkaz:
http://arxiv.org/abs/2204.08650
We discuss standard and tighter upper bounds on the critical temperature $T_c$ of two-dimensional superconductors and superfluids versus particle density n or filling factor $\nu$, under the assumption that the transition from the normal to the super
Externí odkaz:
http://arxiv.org/abs/2203.05478
Publikováno v:
Phys. Rev. Research 4, L032023 (2022)
We study the emergence of supersolid Devil's staircases of spin-orbit coupled bosons loaded in optical lattices. We consider two- and three-dimensional systems of pseudo-spin-$1/2$ bosons interacting via local spin-dependent interactions. These inter
Externí odkaz:
http://arxiv.org/abs/2201.05372
Publikováno v:
Phys. Rev. Lett. 131, 113001 (2023)
We investigate the effects of quantum fluctuations on the low-energy collective modes of two-dimensional (2D) $s$-wave Fermi superfluids from the BCS to the Bose limit. We compare our results to recent Bragg scattering experiments in 2D box potential
Externí odkaz:
http://arxiv.org/abs/2112.09232
We discuss the evolution from BCS to Bose superconductivity versus carrier density in gated two-dimensional s-wave superconductors. We show that the transition from the normal to the superconducting state is controlled by the Berezinskii-Kosterlitz-T
Externí odkaz:
http://arxiv.org/abs/2106.10010
Autor:
Yau, Man Hon, de Melo, C. A. R. Sá
Publikováno v:
Phys. Rev. A 103, 043302 (2021)
We study ultracold color fermions with three internal states Red, Green and Blue with ${\rm SU(3)}$ symmetry in optical lattices, when color-orbit coupling and color-flip fields are present. This system corresponds to a generalization of two-internal
Externí odkaz:
http://arxiv.org/abs/2011.07139