Competition-Induced Sign Reversal of Casimir-Lifshitz Torque: An Investigation on Topological Node-Line Semimetal

• URL: http://arxiv.org/abs/2210.15106v1
• Date: Thu, 27 Oct 2022 01:20:46 GMT
• Title: Competition-Induced Sign Reversal of Casimir-Lifshitz Torque: An Investigation on Topological Node-Line Semimetal
• Authors: Liang Chen and Xuan Guo
• Abstract summary: The dispersion of quasiparticles in node-line semimetals is significantly different in different directions. The competition between relativistic and nonrelativistic dispersions can induce a sign reversal of Casimir-Lifshitz torque. Three different approaches can be applied to generate this sign reversal.
• Score: 7.859029768940294
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The dispersion of quasiparticles in topological node-line semimetals is significantly different in different directions. In a certain direction, the quasiparticles behave like relativistic particles with constant velocity. In other directions, they act as two-dimensional electron gas. The competition between relativistic and nonrelativistic dispersions can induce a sign reversal of Casimir-Lifshitz torque. Three different approaches can be applied to generate this sign reversal, i.e., tuning the anisotropic parameter or chemical potential in node-line semimetal, changing the distance between this material and substrate birefringence. Detailed calculations are illustrated for the system with topological node-line semimetal Ca$_3$P$_2$ and liquid crystal material 4-cyano-4-n-pentylcyclohexane-phenyl.

Related papers

• Superfluid-droplet crossover in a binary boson mixture on a ring: Exact diagonalization solutions for few-particle systems in one dimension [0.0]
  We investigate the formation of self-bound quantum droplets in a one-dimensional binary mixture of bosonic atoms. Results show a remarkable agreement between the few-body regime and the thermodynamic limit in one dimension.
  arXiv  Detail & Related papers  (2023-02-01T11:45:45Z)
• Protected Topological Nodal Ring Semimetal in Graphene [0.0]
  We introduce a topological nodal ring semimetal in graphene with a quantized quantum Hall response. The system may have applications in nano-electronics and in quantum mechanical entanglement applied to band theory.
  arXiv  Detail & Related papers  (2022-11-09T15:15:39Z)
• Realization of an atomic quantum Hall system in four dimensions [3.713193140918009]
  We report the realization of an atomic quantum Hall system evolving in four dimensions (4D) with two spatial dimensions and two synthetic ones encoded in the large spin of dysprosium atoms. Our work opens to the investigation of strongly-correlated topological liquids in 4D generalizing fractional quantum Hall states.
  arXiv  Detail & Related papers  (2022-10-12T15:41:45Z)
• Studying chirality imbalance with quantum algorithms [62.997667081978825]
  We employ the (1+1) dimensional Nambu-Jona-Lasinio (NJL) model to study the chiral phase structure and chirality charge density of strongly interacting matter. By performing the Quantum imaginary time evolution (QITE) algorithm, we simulate the (1+1) dimensional NJL model on the lattice at various temperature $T$ and chemical potentials $mu$, $mu_5$.
  arXiv  Detail & Related papers  (2022-10-06T17:12:33Z)
• Quantum correlations, entanglement spectrum and coherence of two-particle reduced density matrix in the Extended Hubbard Model [62.997667081978825]
  We study the ground state properties of the one-dimensional extended Hubbard model at half-filling. In particular, in the superconducting region, we obtain that the entanglement spectrum signals a transition between a dominant singlet (SS) to triplet (TS) pairing ordering in the system.
  arXiv  Detail & Related papers  (2021-10-29T21:02:24Z)
• Relativistic aspects of orbital and magnetic anisotropies in the chemical bonding and structure of lanthanide molecules [60.17174832243075]
  We study the electronic and ro-vibrational states of heavy homonuclear lanthanide Er2 and Tm2 molecules by applying state-of-the-art relativistic methods. We were able to obtain reliable spin-orbit and correlation-induced splittings between the 91 Er2 and 36 Tm2 electronic potentials dissociating to two ground-state atoms.
  arXiv  Detail & Related papers  (2021-07-06T15:34:00Z)
• Dynamical signatures of point-gap Weyl semimetal [0.0]
  We consider a model where a pair of Weyl points reside on the imaginary axis of the complex energy plane, opening up a point gap characterized by a topological invariant. We predict a time-dependent current flow along the magnetic field in the absence of an electric field, in sharp contrast to the current driven by the chiral anomaly. Second, we reveal a novel type of boundary-skin mode in the wire geometry which becomes localized at two corners of the wire cross section.
  arXiv  Detail & Related papers  (2021-07-05T16:54:07Z)
• Dynamical characterization of Weyl nodes in Floquet Weyl semimetal phases [1.5929852667227002]
  We propose a dynamical invariant capable of characterizing and distinguishing between Weyl points at different quasienergy values. This work paves the way for experimentally probing the rich topological band structures of some seemingly simple Floquet semimetal systems.
  arXiv  Detail & Related papers  (2020-09-19T08:52:32Z)
• Engineering multipartite entangled states in doubly pumped parametric down-conversion processes [68.8204255655161]
  We investigate the quantum state generated by optical parametric down-conversion in a $chi(2) $ medium driven by two modes. The analysis shows the emergence of multipartite, namely 3- or 4-partite, entangled states in a subset of the modes generated by the process.
  arXiv  Detail & Related papers  (2020-07-23T13:53:12Z)
• Generating ${\rm N00N}$-states of surface plasmon-polariton pairs with a nanoparticle [58.720142291102135]
  We consider a generation of two-particle quantum states in the process of spontaneous parametric down-conversion of light. We show that for certain excitation geometries, $rm N00N$-states of surface plasmon-polariton pairs could be obtained.
  arXiv  Detail & Related papers  (2020-02-12T22:59:38Z)
• Bulk detection of time-dependent topological transitions in quenched chiral models [48.7576911714538]
  We show that the winding number of the Hamiltonian eigenstates can be read-out by measuring the mean chiral displacement of a single-particle wavefunction. This implies that the mean chiral displacement can detect the winding number even when the underlying Hamiltonian is quenched between different topological phases.
  arXiv  Detail & Related papers  (2020-01-16T17:44:52Z)

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.