Linear rotor in an ideal Bose gas near the threshold for binding

• URL: http://arxiv.org/abs/2308.03852v2
• Date: Mon, 8 Jan 2024 16:04:59 GMT
• Title: Linear rotor in an ideal Bose gas near the threshold for binding
• Authors: Tibor Dome, Artem G. Volosniev, Areg Ghazaryan, Laleh Safari, Richard Schmidt, and Mikhail Lemeshko
• Abstract summary: We study a linear rotor in a bosonic bath within the angulon formalism. Our focus is on systems where isotropic or anisotropic impurity-boson interactions support a shallow bound state.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We study a linear rotor in a bosonic bath within the angulon formalism. Our focus is on systems where isotropic or anisotropic impurity-boson interactions support a shallow bound state. To study the fate of the angulon in the vicinity of bound-state formation, we formulate a beyond-linear-coupling angulon Hamiltonian. First, we use it to study attractive, spherically symmetric impurity-boson interactions for which the linear rotor can be mapped onto a static impurity. The well-known polaron formalism provides an adequate description in this limit. Second, we consider anisotropic potentials, and show that the presence of a shallow bound state with pronounced anisotropic character leads to a many-body instability that washes out the angulon dynamics.

Related papers

• Symmetry-protected topology and deconfined solitons in a multi-link $\mathbb{Z}_2$ gauge theory [45.88028371034407]
  We study a $mathbbZ$ lattice gauge theory defined on a multi-graph with links that can be visualized as great circles of a spherical shell.<n>We show that this leads to state-dependent tunneling amplitudes underlying a phenomenon analogous to the Peierls instability.<n>By performining a detailed analysis based on matrix product states, we prove that charge deconfinement emerges as a consequence of charge-fractionalization.
  arXiv  Detail & Related papers  (2026-03-02T22:59:25Z)
• Anyon Quasilocalization in a Quasicrystalline Toric Code [0.21410799064827227]
  An exactly solvable model of a quantum spin liquid on a quasicrystal, akin to Kitaev's honeycomb model, was introduced in Kim textitet al.<n>We analyze the strong bond-anisotropic limit of the model and demonstrate that the aperiodic lattice geometry naturally generates a hierarchy of exponentially separated coupling constants.<n>Using numerical studies, we uncover the key mechanisms responsible for this unconventional localization behavior.
  arXiv  Detail & Related papers  (2025-11-21T11:07:02Z)
• From spontaneous to explicit symmetry breaking in a finite-sized system: Bosonic bound states of an impurity [0.0]
  impurity can drive a transition from a homogeneous to a localized state. Low-lying modes resemble finite-size precursors of Higgs-Anderson and Nambu-Goldstone-like modes. We find improved agreement between the few-body exact diagonalization results and mean-field predictions of binding with increasing boson-boson repulsion.
  arXiv  Detail & Related papers  (2024-12-12T15:40:44Z)
• Bound polariton states in the Dicke-Ising model [41.94295877935867]
  We present a study of hybrid light-matter excitations in cavity QED materials.<n>We derive the exact excitations of the system in the thermodynamic limit.
  arXiv  Detail & Related papers  (2024-06-17T18:00:01Z)
• Interacting chiral fermions on the lattice with matrix product operator norms [37.69303106863453]
  We develop a Hamiltonian formalism for simulating interacting chiral fermions on the lattice. The fermion doubling problem is circumvented by constructing a Fock space endowed with a semi-definite norm. We demonstrate that the scaling limit of the free model recovers the chiral fermion field.
  arXiv  Detail & Related papers  (2024-05-16T17:46:12Z)
• Bound impurities in a one-dimensional Bose lattice gas: low-energy properties and quench-induced dynamics [0.0]
  We study two mobile bosonic impurities immersed in a one-dimensional optical lattice and interacting with a bosonic bath. We consider the branch of repulsive interactions that induce the formation of bound impurities, akin to the bipolaron problem.
  arXiv  Detail & Related papers  (2024-02-05T15:01:14Z)
• Chiral symmetry breaking and topological charge of graphene nanoribbons [0.0]
  We explore the edge zigzag properties of rectangular graphene nanoribbons featuring two edges and two armchair edges. Although the self-consistent Hartree-Fock fields break chiral symmetry, our work demonstrates that graphene nanoribbons maintain their status as short-range entangled symmetry-protected topological insulators.
  arXiv  Detail & Related papers  (2023-12-09T07:32:50Z)
• Entanglement Hamiltonian of a nonrelativistic Fermi gas [0.0]
  We study the entanglement Hamiltonian for a spherical domain in the ground state of a nonrelativistic free-fermion gas in arbitrary dimensions. We show that the entanglement spectrum in each sector is identical to that of a hopping chain in a linear potential, with the angular momentum playing the role of the subsystem boundary.
  arXiv  Detail & Related papers  (2023-11-27T22:27:56Z)
• Stability via symmetry breaking in interacting driven systems [0.0]
  Photonic and bosonic systems subject to incoherent, wide-bandwidth driving cannot typically reach stable finite-density phases using only non-dissipative Hamiltonian nonlinearities. We describe here a very general mechanism for circumventing this common limit, whereby Hamiltonian interactions can cut-off heating from a Markovian pump.
  arXiv  Detail & Related papers  (2023-07-31T15:07:07Z)
• Dissipative preparation of a Floquet topological insulator in an optical lattice via bath engineering [44.99833362998488]
  Floquet engineering is an important tool for realizing charge-neutral atoms in optical lattices. We show that a driven-dissipative system approximates a topological insulator.
  arXiv  Detail & Related papers  (2023-07-07T17:47:50Z)
• Multiple polaritonic edge states in a Su-Schrieffer-Heeger chain strongly coupled to a multimode cavity [0.0]
  Dipolar emitters strongly coupled to a multimode optical waveguide cavity are studied. In the strong-coupling regime, the cavity photons hybridize the bright dipolar bulk band into a polaritonic one. We find that bulk polaritons entering in resonance with the edge states inherit part of their localization properties.
  arXiv  Detail & Related papers  (2023-05-11T16:31:24Z)
• 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)
• Prolonged orbital relaxation by locally modified phonon density of states for SiV$^-$ center in nanodiamonds [45.82374977939355]
  Coherent quantum systems are a key resource for emerging quantum technology. A novel method is presented to prolong the orbital relaxation with a locally modified phonon density of states.
  arXiv  Detail & Related papers  (2021-07-30T14:14:26Z)
• Fano interference in quantum resonances from angle-resolved elastic scattering [62.997667081978825]
  We show that probing the angular dependence of the cross section allows us to unveil asymmetric Fano profiles in a single channel shape resonance. We observe a shift in the peak of the resonance profile in the elastic collisions between metastable helium and deuterium molecules.
  arXiv  Detail & Related papers  (2021-05-12T20:41:25Z)
• Light-matter interactions near photonic Weyl points [68.8204255655161]
  Weyl photons appear when two three-dimensional photonic bands with linear dispersion are degenerated at a single momentum point, labeled as Weyl point. We analyze the dynamics of a single quantum emitter coupled to a Weyl photonic bath as a function of its detuning with respect to the Weyl point.
  arXiv  Detail & Related papers  (2020-12-23T18:51:13Z)
• Dynamical solitons and boson fractionalization in cold-atom topological insulators [110.83289076967895]
  We study the $mathbbZ$ Bose-Hubbard model at incommensurate densities. We show how defects in the $mathbbZ$ field can appear in the ground state, connecting different sectors. Using a pumping argument, we show that it survives also for finite interactions.
  arXiv  Detail & Related papers  (2020-03-24T17:31:34Z)

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.