Today's arXivsummary: https://arxiv.org/abs/2304.06076 by Krupnitska & Brenig. Authors show that the finite temperature second harmonic generation (2HG) allows one to probe characteristic features of two fractional quasiparticle types. 2HG susceptibility displays oscillatory spectrum set by the fermionic excitations. #CondMat #StrEl #arXiv_2304_06076

Today's #arXivsummary: https://arxiv.org/abs/2304.05553 by Chen et. al. Authors predict that under strong interaction conditions, there exist two distinct types of
constrained thermal phases in a 1D Rydberg blockade array. The first arises in the transverse field dominated regime whose energy transport is super-diffusive; the second is stabilized after adding a growing longitudinal field whose energy diffusion is ballistic. #CondMat #StrEl #arXiv_2304_05553

Today's #arXivsummary: https://arxiv.org/abs/2304.04787 by Zhao, La Nave, & Phillips. Authors find the Hatsugai-Kohmoto model as a stable quartic fixed point via computation of the β−function in the presence of perturbing local interactions. Agreement with Hubbard arises because both models break the Z2 symmetry on a Fermi surface. #CondMat #StrEl #arXiv_2304_04787

Today's #arXivsummary: https://arxiv.org/abs/2304.00528 by Misawa et. al. Authors study the dynamical spin transport in the Kitaev-Heisenberg model by applying an AC magnetic field to an edge of the system. In the Kitaev QSL phase, spin polarization at the other edge are resonantly induced in specific spin component. Resonance governed by itinerant Majorana fermions with a broad continuum excitation spectrum. #CondMat #StrEl #arXiv_2304_00528

Today's #arXivsummary: https://arxiv.org/abs/2303.17627 by Zhu et. al. Authors show that random, measurement-only circuits which implement the competition of bond and plaquette couplings of the Kitaev honeycomb model give rise to a structured volume-law entangled phase. Defines error thresholds for the color code in the presence of projective error and stochastic syndrome measurements. #CondMat #StrEl #arXiv_2303_17627

Today's #arXivsummary: https://arxiv.org/abs/2303.16222 by Chern & Castelnovo. Authors subject generic nearest-neighbor spin model of Kitaev magnets to a sufficiently strong in-plane magnetic field. Topologically trivial and nontrivial parameter regimes coexist under in-plane magnetic fields. Topological phase diagrams of the magnon bands studied. #CondMat #StrEl #arXiv_2303_16222

Today's #arXivsummary: https://arxiv.org/abs/2303.15505 by Popov & Tarnopolsky. Authors consider three stacked graphene monolayers with equal consecutive twist angles. In chiral limit when interlayer couplings ignored, four perfect flat bands found. At magic angles, upper and lower bands touch four exactly flat bands at Dirac point in middle of graphene layer. #CondMat #StrEl #arXiv_2303_15505

Today's #arXivsummary: https://arxiv.org/abs/2303.12833 by Castro et. al. Authors predict new interacting electronic orders emerging near higher-order Van Hove singularities present in the Chern bands of the Haldane model. Singularities are classified, revealing regimes of ferromagnetism, density-waves, and superconductivity. Repulsive interactions stabilize long-sought PDW state; exotic Chern supermetal possible in which a non-Fermi liquid phase with an anomalous quantum Hall response realized. #CondMat #StrEl #arXiv_2303_12833

Today's #arXivsummary: https://arxiv.org/abs/2303.12348 by Peng et. al. Authors perform large-scale DMRG studies of the lightly doped Hubbard model on the honeycomb lattice on long 3 & 4-leg cylinders. Light doping reveals superconducting state w/coexisting quasi-long range SC & charge density wave orders. #CondMat #StrEl #arXiv_2303_12348

Today's #arXivsummary: https://arxiv.org/abs/2303.10212 by Rüegg et. al. Authors formulate a Chern-Simons (CS) theory of the coupled composite electron liquid (CEL) and composite hole liquid (CHL). Effective action of the CS gauge field fluctuations around the saddle-point leads to stable pairing between CEL and CHL. #CondMat #StrEl #arXiv_2303_10212

Today's #arXivsummary: https://arxiv.org/abs/2303.06520 by Markiewicz et. al. Authors look at a possible correlation btw higher-order Van Hove singularities (hoVHS) & high-Tc superconductivity. Cuprates are found to lie in parameter regime where the amplitude of the hoVHS is not too large. #CondMat #StrEl #arXiv_2303_06520

Today's #arXivsummary: https://arxiv.org/abs/2303.01597 by Tai & Claassen. Authors shows that irradiation with light permits a new quantum-geometric tool to understand and probe quantum materials; namely, light may be used to directly deform the
material’s Wannier orbitals that comprise the states near the Fermi energy. Non-equilibrium control of Moire heterostructures demonstrated; THz radiation may conspire to yield fragile topological obstruction to alter material's interactions. #CondMat #StrEl #arXiv_2303_01597

Today's #arXivsummary: https://arxiv.org/abs/2303.00756 by Jiang et. al. Authors utilize the DMRG-computed natural orbital bands to downfold the three-band Hubbard model to an effective single-band model. Captures the doping-asymmetric carrier mobility, as well as enhancing the pairing
in a single-band model for the hole-doped cuprates. #CondMat #StrEl #arXiv_2303_00756

Today's #arXivsummary: https://arxiv.org/abs/2302.11742 by Liao et. al. Authors develop an incremental algorithm to compute the entanglement entropy at a fermionic deconfined quantum critical point with exceptional accuracy; reveals that the universal coefficient of the logarithmic correction is negative, which does not agree with the positivity requirement of the conformal field theory. #CondMat #StrEl #arXiv_2302_11742

Today's #arXivsummary: https://arxiv.org/abs/2302.10590 by Mukherjee et. al. Authors perform a sequence of RG transformations on a system of 2D non-interacting Dirac fermions placed on a torus. Emergence of additional spatial dimension observed which arises out of the scaling of multipartite entanglement. For a strong transverse magnetic field, Luttinger's theorem breaks down. Relation found between the topological invariants of the metallic and the quantum Hall systems. #CondMat #StrEl #arXiv_2302_10590

Today's #arXivsummary: https://arxiv.org/abs/2302.08876 by Shankar et. al. Authors consider the four-point function of a SYK-type model numerically and find that the Lyapunov exponent is maximal for a range of ratios of A and B-type Majorana fermions centered around equal population at strong coupling. #CondMat #StrEl #arXiv_2302_08876

Today's #arXivsummary: https://arxiv.org/abs/2302.07883 by Han et. al. Authors study the effect of electron-electron interactions on the non-Hermitian Kondo problem in a Luttinger liquid. Perturbative renormalization group analysis to two-loop order illustrates that the interplay between non-Hermitian Kondo couplings and electron-electron interactions may produce a pair of complex fixed points. #CondMat #StrEl #arXiv_2302_07883

Today's #arXivsummary: https://arxiv.org/abs/2302.06635 by Laumann & Moessner. Authors show that in quantum spin ice, the emergent magnetic charges of Maxwell electromagnetism carry native electric charge of the topological phase. A thermal gas of emergent magnetic charges are predicted to make an activated contribution to the optical conductivity at low temperatures. #CondMat #StrEl #arXiv_2302_06635

Today's #arXivsummary: https://arxiv.org/abs/2302.04877 by Aksoy et. al. Authors ask whether it is possible to obtain single odd higher-order singularities in the dispersion of an electronic system. Types of instabilities that can occur for isolated singularities could potentially lead to non-Fermi liquid behavior; such odd singularities occur once time-reversal symmetry is broken. Shown in Haldane model example with staggered chemical potential. #CondMat #StrEl #arXiv_2302_04877

Today's #arXivsummary: https://arxiv.org/abs/2302.04325, by Murciano et. al. Authors study the impact of measurement on an Ising quantum critical chain utilizing correlated ancilla which are entangled with the critical chain and then projectively measured. Measurements can qualitatively alter long-distance correlation. Possible experimental realization in Rydberg arrays. #CondMat #StrEl #arXiv_2302_04325