Assa Auerbach
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View article: The two critical temperatures conundrum in La$_{1.83}$Sr$_{0.17}$CuO$_4$
The two critical temperatures conundrum in La$_{1.83}$Sr$_{0.17}$CuO$_4$ Open
The in-plane and out-of-plane superconducting stiffness of La_{1.83}Sr_{0.17}CuO_4 rings appear to vanish at different transition temperatures, which contradicts thermodynamical expectation. In addition, we observe a surpris…
View article: Quantum Transport Theory of Strongly Correlated Matter
Quantum Transport Theory of Strongly Correlated Matter Open
This report reviews recent progress in computing Kubo formulas for general interacting Hamiltonians. The aim is to calculate electric and thermal magneto-conductivities in strong scattering regimes where Boltzmann equation and Hall conduct…
View article: Report on 2308.15540v5
Report on 2308.15540v5 Open
The in-plane and out-of-plane superconducting stiffness of La 1.83 Sr 0.17 CuO 4 rings appear to vanish at different transition temperatures, which contradicts thermodynamical expectation.In addition, we observe a surprisingly strong depen…
View article: Report on 2308.15540v4
Report on 2308.15540v4 Open
The in-plane and out-of-plane superconducting stiffness of La 1.83 Sr 0.17 CuO 4 rings appear to vanish at different transition temperatures, which contradicts thermodynamical expectation.In addition, we observe a surprisingly strong depen…
View article: Report on 2308.15540v4
Report on 2308.15540v4 Open
The in-plane and out-of-plane superconducting stiffness of La 1.83 Sr 0.17 CuO 4 rings appear to vanish at different transition temperatures, which contradicts thermodynamical expectation.In addition, we observe a surprisingly strong depen…
View article: Metallic transport of hard core bosons
Metallic transport of hard core bosons Open
Conductivities and Hall coefficients of two dimensional hard core bosons are calculated using the thermodynamic expansions of Kubo formulas. At temperatures above the superfluid transition, the resistivity rises linearly and is weakly depe…
View article: The two critical temperatures conundrum in La$_{1.83}$Sr$_{0.17}$CuO$_4$
The two critical temperatures conundrum in La$_{1.83}$Sr$_{0.17}$CuO$_4$ Open
The in-plane and out-of-plane superconducting stiffness of LSCO rings appear to vanish at different transition temperatures, which contradicts thermodynamical expectation. In addition, we observe a surprisingly strong dependence of the out…
View article: Hall and Thermal Hall conductivities of gapless systems
Hall and Thermal Hall conductivities of gapless systems Open
The standard Kubo formulas for Hall-type conductivities are generally difficult to calculate for gapless, disordered and strongly correlated Hamiltonians. Here they are transformed into more computable on-shell formulas, devoid of the dive…
View article: Hall Coefficient of Semimetals
Hall Coefficient of Semimetals Open
A recently developed formula for the Hall coefficient [A. Auerbach, Phys. Rev. Lett. 121, 066601 (2018)PRLTAO0031-900710.1103/PhysRevLett.121.066601] is applied to nodal line and Weyl semimetals (including graphene) and to spin-orbit split…
View article: Report on 1912.10062v3
Report on 1912.10062v3 Open
Magnetotransport theory of layered superconductors in the flux flow steady state is revisited.Longstanding controversies concerning observed Hall sign reversals are resolved.The conductivity separates into a Bardeen-Stephen vortex core con…
View article: Report on 1912.10062v3
Report on 1912.10062v3 Open
Magnetotransport theory of layered superconductors in the flux flow steady state is revisited.Longstanding controversies concerning observed Hall sign reversals are resolved.The conductivity separates into a Bardeen-Stephen vortex core con…
View article: Report on 1912.10062v2
Report on 1912.10062v2 Open
Magnetotransport theory of layered superconductors in the flux flow steady state is revisited.Longstanding controversies concerning observed Hall sign reversals are resolved.The conductivity separates into a Bardeen-Stephen vortex core con…
View article: Equilibrium formulae for transverse magnetotransport of strongly correlated metals
Equilibrium formulae for transverse magnetotransport of strongly correlated metals Open
Exact formulas for the Hall coefficient, modified Nernst coefficient, and\nthermal Hall coefficient of metals are derived from the Kubo formula. These\ncoefficients depend exclusively on equilibrium (time independent)\nsusceptibilities, wh…
View article: Hall Number of Strongly Correlated Metals
Hall Number of Strongly Correlated Metals Open
An exact formula for the temperature dependent Hall number of metals is derived. It is valid for nonrelativistic fermions or bosons, with an arbitrary potential and interaction. This dc transport coefficient is proven to (remarkably) depen…
View article: Doped Kondo chain, a heavy Luttinger liquid
Doped Kondo chain, a heavy Luttinger liquid Open
The one dimensional $SU(2)$ Kondo Lattice model is studied by Density Matrix Renormalization Group away from half-filling. We find signatures of a Heavy Tomonaga-Luttinger Liquid (HTLL) phase, which describes one dimensional Heavy Fermions…
View article: Nonlinear Conductivity and Collective Charge Excitations in the Lowest Landau Level
Nonlinear Conductivity and Collective Charge Excitations in the Lowest Landau Level Open
For weakly disordered fractional quantum Hall phases, the nonlinear photoconductivity is related to the charge susceptibility of the clean system by a Floquet boost. Thus, it may be possible to probe collective charge modes at finite wave …
View article: Collective Modes in a Quantum Solid
Collective Modes in a Quantum Solid Open
We provide a theoretical explanation for the optical modes observed in inelastic neutron scattering on the bcc solid phase of helium 4 [T. Markovich et al., Phys. Rev. Lett. 88, 195301 (2002)]. We argue that these excitations are amplitude…
View article: Spin transport of weakly disordered Heisenberg chain at infinite temperature
Spin transport of weakly disordered Heisenberg chain at infinite temperature Open
We study the disordered Heisenberg spin chain, which exhibits many body\nlocalization at strong disorder, in the weak to moderate disorder regime. A\ncontinued fraction calculation of dynamical correlations is devised, using a\nvariational…
View article: Spin transport of weakly disordered Heisenberg chain at infinite temperature
Spin transport of weakly disordered Heisenberg chain at infinite temperature Open
We study the disordered Heisenberg spin chain, which exhibits many body localization at strong disorder, in the weak to moderate disorder regime. A continued fraction calculation of dynamical correlations is devised, using a variational ex…
View article: Transport of weakly disordered spin chains at infinite temperature
Transport of weakly disordered spin chains at infinite temperature Open
We study the disordered Heisenberg spin chain, which exhibits many body localization at strong disorder, in the weak to moderate disorder regime. A continued fraction calculation of dynamical correlations is devised, using a variational ex…