#arxivsummary — Public Fediverse posts

Today's #arXivsummary: https://arxiv.org/abs/2311.06350 by Romen et. al. Authors investigate deconfined quantum critical points in the long-range, anisotropic Heisenberg chain. Model undergoes a continuous phase transition from valence bond solid to an antiferromagnet. Long-range interactions are irrelevant & transition is well described by a double frequency sine-Gordon model. #CondMat #arXiv_2311_06350

Today's #arXivsummary: https://arxiv.org/abs/2311.04266 by Radzihovsky. Author points out a simple and generic mechanism for a thermally-driven reentrant supersolidity. Mechanism reduces to a re-enterant low-temperature normal-superfluid transition. #CondMat #arXiv_2311_04266

Today's #arXivsummary: https://arxiv.org/abs/2311.02155 by Pak et. al. Authors show that the PT-symmetry stabilizes the Hopf invariant in the Hopf insulator even in the presence of non-Hermiticity. Zak phase remains quantized. #CondMat #arXiv_2311_02155

Today's #arXivsummary: https://arxiv.org/abs/2310.11236 by Misawa. Author's work suggests that quasiparticles in the normal state of high-Tc cuprate superconductors behave as a 3D Fermi liquid. Logarithmic formula as a function of T emerges in transport quantities and thermodynamics results from quasiparticle interactions. #CondMat #arXiv_2310_11236

Today's #arXivsummary: https://arxiv.org/abs/2310.09324 by Sun. Authors show that an indirect exchange interaction between spin impurities can be controlled by a dissipationless supercurrent with just a conventional superconductor and two spin impurities placed on its surface. #CondMat #arXiv_2310_09324

Today's #arXivsummary: https://arxiv.org/abs/2310.07978 by Chen et. al. Authors study Anderson localization in disordered tight-binding models on hyperbolic lattices. Numerically show the existence of an Anderson localization transition on the {8,3} & {8,8} lattices. #CondMat #arXiv_2310_07978

Today's #arXivsummary: https://arxiv.org/abs/2310.06891 by Kao et. al. Authors study the dynamical response of vacancy-induced quasiparticle excitations in a site-diluted Kitaev spin liquid in the presence of a magnetic field. STM response is shown to be sensitive to the local flux configuration, magnetic field strength, and vacancy concentration. #CondMat #arXiv_2310_06891

Today's #arXivsummary: https://arxiv.org/abs/2310.06748 by Shankar & Maciejko. Authors utilize semiclassical instanton methods not relying on conformal invariance to construct monopole operators directly in (2+1)D spacetime as instanton-induced 't Hooft vertices, as applied to the Dirac liquid. Instanton-based approach can determine monopole quantum numbers on bipartite lattices. #CondMat #arXiv_2310_06748

Today's #arXivsummary: https://arxiv.org/abs/2310.03452 by Dyke et. al. Authors excite amplitude oscillations in an atomic Fermi gas with resonant interactions via an interaction quench. Time-resolved response of the atom cloud measured, which reveals amplitude oscillations at twice the frequency of the gap. #CondMat #arXiv_2310_03452

Today's #arXivsummary: https://arxiv.org/abs/2310.02910 by Zhao et. al. Authors develop expressions for non-local resistances of hybrid quantum Hall-superconducting devices. Superconducting phase coherence is not maintained over micron-scale graphene devices. #CondMat #arXiv_summary_2310_02910

Today's #arXivsummary: https://arxiv.org/abs/2310.01493 by Nikolić. Authors explore the quantum liquids based on the π3(S2) homotopy group. At least two strongly correlated phases of interlinked loops can exist in d=3 spatial dimensions at zero & low finite temperatures. #CondMat #arXiv_2310_01493

Today's #arXivsummary: https://arxiv.org/abs/2309.17231 by Chen et. al. Authors show a planar thermal Hall effect is present in the Kitaev candidate material Na2Co2TeO6, where is argued to be generated by phonons. Authors suggest re-evaluation of planar thermal Hall effect observed in α-RuCl3. #CondMat #arXiv_2309_17231

Today's #arXivsummary: https://arxiv.org/abs/2309.16124 by Tupitsyn & Prokof'ev. Authors show that ladder-type finite-T Bethe-Salpeter eqn in the Hartree-Fock basis for the 3-point vertex function may be accurately solved on the real-frequency axis by virtue of diagrammatic Monte Carlo & series resummation. Applied to the homogeneous electron gas model. #CondMat #arXiv_2309_16124

Today's #arXivsummary: https://arxiv.org/abs/2309.15153 by Jin et. al. Authors study the effect of hole doping on the Kitaev spin liquid. Ferromagnetic Kitaev exchange results in the system being very susceptible to the formation of a FM spin polarization. Parton mean-field theory incorporating fermionic holons and bosonic spinons/magnons developed. #CondMat #arXiv_2309_15153

Today's #arXivsummary: https://arxiv.org/abs/2309.14479 by Bhattacharyya et. al. Authors calculate the conductivities and Hall coefficients of 2D hard-core bosons via the thermodynamic expansions of Kubo formulas. Resistivity rises linearly above superfluid transition. #CondMat #arXiv_2309_14479

Today's #arXivsummary: https://arxiv.org/abs/2309.12571 by Li et. al. Authors study the optical conductivity of pristine 2D electrons near an Ising-nematic quantum critical point. Frequency scaling of the conductivity and the shape of the Fermi surface discussed. #CondMat #arXiv_2309_12571

Today's #arXivsummary: https://arxiv.org/abs/2309.11670 by Li et. al. Authors study non-Hermitian bosonic gases with Hubbard interactions in the one-dimensional zigzag optical lattices. Non-Hermitian quantum phase transition found. Dependence on dissipation discussed. #CondMat #arXiv_2309_11670

Today's #arXivsummary: https://arxiv.org/abs/2309.10030 by O'Brien & Fradkin. Authors formulate an exactly solvable model of a 2D randomly pinned incommensurate charge density wave. Berezinskii-Kosterlitz-Thouless phase transition seen in the large-N limit; crossover between weakly & strongly-disordered regimes discussed. #CondMat #arXiv_2309_10030

Today's #arXivsummary: https://arxiv.org/abs/2309.08262, by Ostoja-Starzewski & Surówka. Authors generalize odd elasticity of planar materials to the concept of thermoelasticity. Stress invariance results in an equivalence class of a wide range of odd materials with different values of material properties. Hydrodynamic modes in an odd thermoelastic solid with Fourier heat conduction studied. #CondMat #arXiv_2309_08262

Today's #arXivsummary: https://arxiv.org/abs/2309.05486 by Meier et. al. Authors investigate how electronic correlations in enhancing electron-phonon coupling in infinite-layer nickelates. In particular, ab initio perturbation theory utilized to perform state-of-the-art GW and Eliashberg-theory calculations. #CondMat #arXiv_2309_05486

Today's #arXivsummary: https://arxiv.org/abs/2309.03946 by Du et. al. Authors introduce a "nonlinear Lifshitz photon theory"; an interacting theory of a U(1) gauge boson w/quadratic dispersion relation. Interaction terms in theory lead to the decay of the Lifshitz photon. #CondMat #arXiv_2309_03946

Today's #arXivsummary: https://arxiv.org/abs/2309.02483 by Gavensky et. al. Authors use Streda's formula to derive an expression for the many-body Chern number in terms of the single-particle interacting Green's function. Topological invariant may be split into two components; one component connected to Luttinger's theorem. #CondMat #arXiv_2309_02483

Today's #arXivsummary: https://arxiv.org/abs/2309.00679 by Yamase et. al. Authors look into the possibility of a superconducting mechanism from spin fluctuations in an Eliashberg framework. Superconducting tendency suppressed substantially by negligible contribution from a small momentum transfer far away from (pi,pi). #CondMat #arXiv_2309_00679

Today's #arXivsummary: https://arxiv.org/abs/2309.00049 by Roy et. al. Authors introduce framework that extends the eigenstate thermalization hypothesis to non-Hermitian systems. Illustrated in a modified framework on non-Hermitian random-matrix and Sachdev--Ye--Kitaev models. #CondMat #arXiv_2309_00049

Today's #arXivsummary: https://arxiv.org/abs/2308.16907 by Juricic & Roy. Authors propose a general construction of symmetry-protected Lorentz invariant non-Hermitian Dirac semimetals by invoking mass-like, anti-Hermitian Dirac operators. Competition between mass orderings & hallmarks on quasiparticle spectra explored. #CondMat #arXiv_2308_16907

Today's #arXivsummary: https://arxiv.org/abs/2308.15523 by Ouassou et. al. Authors consider the RKKY interaction between localized spins mediated by a p-wave triplet superconductor. Spin of the Cooper pair in a triplet state also modulates the spin-spin coupling. Finite spin expectation value in non-unitary SC w/RKKY interaction can lead to non-collinear magnetic ground states. #CondMat #arXiv_2308_15523

Today's #arXivsummary: https://arxiv.org/abs/2308.14795 by Lesser et. al. Authors establish 2D superconducting arrays as platforms for realizing topological phases of matter, with an emphasis on chiral topological superconductivity. Topological transitions may be adjusted via a time-reversal-symmetry breaking knob. #CondMat #arXiv_2308_14695

Today's #arXivsummary: https://arxiv.org/abs/2308.13597 by Athanasiou et. al. Authors propose protocols to realize Thouless pumping in electrically tunable Josephson junction arrays modeling Rice-Mele and Harper-Hofstadter pumping. Long-time behavior of controllable superconducting island chains explored numerically. #CondMat #arXiv_2308_13597

Today's #arXivsummary: https://arxiv.org/abs/2308.13005 by @physicssteve & @jenseisert. Authors combine continuous unitary flow techniques with the method of scrambling transforms to facilitate the simulation of non-equilibrium dynamics of two-dimensional quantum systems. Applicable to intermediate-scale time evolution. #CondMat #arXiv_2308_13005

Today's #arXivsummary: https://arxiv.org/abs/2308.12040 by Kumar et. al. Authors propose a digital-analog quantum algorithm for simulating the Hubbard-Holstein model. Reduction in circuit depth of the digital-analog quantum computing algorithm outperforms a purely digital approach. #CondMat #arXiv_2308_12040