Bistability of Bose-Fermi mixtures
- URL: http://arxiv.org/abs/2004.07008v1
- Date: Wed, 15 Apr 2020 11:20:06 GMT
- Title: Bistability of Bose-Fermi mixtures
- Authors: Tomasz Karpiuk, Mariusz Gajda, Miros{\l}aw Brewczyk
- Abstract summary: We study the properties of the Bose-Fermi mixture from the perspective of reaching a state of a self-bound quantum droplet.
For weak repulsion between bosons, one of the equilibrium states, smaller in size, spherically symmetric, and with negative energy, corresponds to quantum droplet.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We study the properties of the Bose-Fermi mixture from the perspective of
reaching a state of a self-bound quantum droplet. The variational analysis
shows that the system exhibits bistability. For weak repulsion between bosons,
one of the equilibrium states, smaller in size, spherically symmetric, and with
negative energy, corresponds to quantum droplet, the other with always positive
energy represents the elongated droplet-like state immersed in the sea of a
fermionic cloud. For stronger repulsion between bosons the bifurcation is
seized and only the former state is left. Now it represents an elongated object
which, for strong enough boson-fermion attraction, gets negative energy. It
becomes an excited Bose-Fermi droplet when the trap is released, what is
demonstrated by solving the quantum hydrodynamics equations for the Bose-Fermi
system. To depict our ideas we consider the $^{133}$Cs-$^6$Li mixture under
ideal conditions, i.e. we assume no losses.
Related papers
- Probing the quantum nature of gravity using a Bose-Einstein condensate [0.11704154007740832]
The effect of noise induced by gravitons has been investigated using a Bose-Einstein condensate.
For a Bose-Einstein condensate with a single mode, the lower bound of the expectation value of the square of the uncertainty in the amplitude measurement does not become infinite.
Because of the noise induced by the graviton, there is a minimum value of the measurement time below which it is impossible to detect any gravitational wave using a Bose-Einstein condensate.
arXiv Detail & Related papers (2024-03-27T11:18:44Z) - Quantum vibrational mode in a cavity confining a massless spinor field [91.3755431537592]
We analyse the reaction of a massless (1+1)-dimensional spinor field to the harmonic motion of one cavity wall.
We demonstrate that the system is able to convert bosons into fermion pairs at the lowest perturbative order.
arXiv Detail & Related papers (2022-09-12T08:21:12Z) - Floquet-heating-induced Bose condensation in a scar-like mode of an open
driven optical-lattice system [62.997667081978825]
We show that the interplay of bath-induced dissipation and controlled Floquet heating can give rise to non-equilibrium Bose condensation.
Our predictions are based on a microscopic model that is solved using kinetic equations of motion derived from Floquet-Born-Markov theory.
arXiv Detail & Related papers (2022-04-14T17:56:03Z) - Regularized Zero-Range Hamiltonian for a Bose Gas with an Impurity [77.34726150561087]
We study the Hamiltonian for a system of N identical bosons interacting with an impurity.
We introduce a three-body force acting at short distances.
The effect of this force is to reduce to zero the strength of the zero-range interaction between two particles.
arXiv Detail & Related papers (2022-02-25T15:34:06Z) - Classical analog of qubit logic based on a magnon Bose-Einstein
condensate [52.77024349608834]
We present a classical version of several quantum bit (qubit) functionalities using a two-component magnon Bose-Einstein condensate.
The macroscopic wavefunctions of these two condensates serve as orthonormal basis states that form a system being a classical counterpart of a single qubit.
arXiv Detail & Related papers (2021-11-12T16:14:46Z) - Bose--Einstein condensation for particles with repulsive short-range
pair interactions in a Poisson random external potential in $\mathbb R^d$ [0.0]
We study Bose gases in $d$ dimensions, $d ge 2$, with short-range repulsive pair interactions, at positive temperature, in the canonical ensemble and in the thermodynamic limit.
For sufficiently strong interparticle interactions, we show that almost surely there cannot be Bose-Einstein condensation into a sufficiently localized, normalized one-particle state.
arXiv Detail & Related papers (2021-10-09T14:52:14Z) - Partitioning dysprosium's electronic spin to reveal entanglement in
non-classical states [55.41644538483948]
We report on an experimental study of entanglement in dysprosium's electronic spin.
Our findings open up the possibility to engineer novel types of entangled atomic ensembles.
arXiv Detail & Related papers (2021-04-29T15:02:22Z) - Repulsively diverging gradient of the density functional in the Reduced
Density Matrix Functional Theory [0.0]
We show that the existence of the Bose-Einstein condensation force is completely universal for any type of pair-interaction.
We also show the existence of an analogous repulsive gradient in the fermionic RDMFT for the $N$-fermion singlet sector.
arXiv Detail & Related papers (2021-03-29T11:04:30Z) - Self-stabilized Bose polarons [0.0]
We show a solution of the Bose polaron problem beyond the Bogoliubov approximation.
We show that the Bose polaron energy remains bounded from below across the resonance.
Our results demonstrate how the dressing cloud replaces the attractive impurity potential with an effective many-body potential that excludes binding.
arXiv Detail & Related papers (2021-02-26T17:35:00Z) - Mesoscopic quantum superposition states of weakly-coupled matter-wave
solitons [58.720142291102135]
We establish quantum features of an atomic soliton Josephson junction (SJJ) device.
We show that the SJJ-model in quantum domain exhibits unusual features due to its effective nonlinear strength proportional to the square of total particle number.
We have shown that the obtained quantum state is more resistant to few particle losses from the condensates if tiny components of entangled Fock states are present.
arXiv Detail & Related papers (2020-11-26T09:26:19Z) - Quantum dynamics of Bose-polaron in a $d$-dimensional Bose Einstein
condensate [0.0]
We study the quantum motion of an impurity atom immersed in a Bose Einstein condensate in arbitrary dimension.
When the impurity is not trapped, we calculate the mean square displacement, showing that the motion is super diffusive.
We quantify the non-Markovianity of the particle's motion, and find that it increases with dimensionality.
arXiv Detail & Related papers (2020-07-09T16:57:58Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.