Christopher Mudry
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View article: Conformal Data for the O(3) Wilson-Fisher CFT from Fuzzy Sphere Realization of Quantum Rotor Model
Conformal Data for the O(3) Wilson-Fisher CFT from Fuzzy Sphere Realization of Quantum Rotor Model Open
We present a model for strongly interacting fermions with internal O(3) symmetry on the fuzzy-sphere that (i) preserves the rotational symmetry of the fuzzy sphere and (ii) undergoes a quantum phase transition in the (2+1)-dimensional O(3)…
View article: Incommensurate gapless ferromagnetism connecting competing symmetry-enriched deconfined quantum phase transitions
Incommensurate gapless ferromagnetism connecting competing symmetry-enriched deconfined quantum phase transitions Open
We present a scenario in which a gapless extended phase serves as a “hub” connecting multiple symmetry-enriched deconfined quantum critical points. As a concrete example, we construct a lattice model with Z2×Z2×Z2 symmetry for quantum spin…
View article: Deconfined classical criticality in the anisotropic quantum spin-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mfrac><mml:mn>1</mml:mn><mml:mn>2</mml:mn></mml:mfrac></mml:math> XY model on the square lattice
Deconfined classical criticality in the anisotropic quantum spin- XY model on the square lattice Open
The anisotropic quantum spin-12 XY model on a linear chain was solved by Lieb, Schultz, and Mattis [] and shown to display a continuous quantum phase transition at the O(2) symmetric point separating two gapped phases with competing Ising …
View article: Deconfined classical criticality in the anisotropic quantum spin-1/2 XY model on the square lattice
Deconfined classical criticality in the anisotropic quantum spin-1/2 XY model on the square lattice Open
The anisotropic quantum spin-1/2 XY model on a linear chain was solved by Lieb, Schultz, and Mattis in 1961 and shown to display a continuous quantum phase transition at the O(2) symmetric point separating two gapped phases with competing …
View article: Lieb-Schultz-Mattis anomalies and web of dualities induced by gauging in quantum spin chains
Lieb-Schultz-Mattis anomalies and web of dualities induced by gauging in quantum spin chains Open
Lieb-Schultz-Mattis (LSM) theorems impose non-perturbative constraints on the zero-temperature phase diagrams of quantum lattice Hamiltonians (always assumed to be local in this paper). LSM theorems have recently been interpreted as the la…
View article: Designing the stripe-ordered cuprate phase diagram through uniaxial-stress
Designing the stripe-ordered cuprate phase diagram through uniaxial-stress Open
The ability to efficiently control charge and spin in the cuprate high-temperature superconductors is crucial for fundamental research and underpins technological development. Here, we explore the tunability of magnetism, superconductivity…
View article: Report on scipost_202308_00019v1
Report on scipost_202308_00019v1 Open
Lieb-Schultz-Mattis (LSM) theorems impose non-perturbative constraints on the zerotemperature phase diagrams of quantum lattice Hamiltonians (always assumed to be local in this paper).LSM theorems have recently been interpreted as the latt…
View article: Lieb-Schultz-Mattis anomalies and web of dualities induced by gauging in quantum spin chains
Lieb-Schultz-Mattis anomalies and web of dualities induced by gauging in quantum spin chains Open
Lieb-Schultz-Mattis (LSM) theorems impose non-perturbative constraints on the zero-temperature phase diagrams of quantum lattice Hamiltonians (always assumed to be local in this paper). LSM theorems have recently been interpreted as the la…
View article: Single monkey-saddle singularity of a Fermi surface and its instabilities
Single monkey-saddle singularity of a Fermi surface and its instabilities Open
Fermi surfaces can undergo sharp transitions under smooth changes of parameters. Such transitions can have a topological character, as is the case when a higher-order singularity, one that requires cubic or higher-order terms to describe t…
View article: Single monkey-saddle singularity of a Fermi surface and its instabilities
Single monkey-saddle singularity of a Fermi surface and its instabilities Open
Fermi surfaces can undergo sharp transitions under smooth changes of parameters. Such transitions can have a topological character, as is the case when a higher-order singularity, one that requires cubic or higher-order terms to describe t…
View article: Elementary derivation of the stacking rules of invertible fermionic topological phases in one dimension
Elementary derivation of the stacking rules of invertible fermionic topological phases in one dimension Open
Invertible fermionic topological (IFT) phases are gapped phases of matter\nwith nondegenerate ground states on any closed spatial manifold. When open\nboundary conditions are imposed, nontrivial IFT phases support gapless boundary\ndegrees…
View article: Lieb-Schultz-Mattis type theorems for Majorana models with discrete symmetries
Lieb-Schultz-Mattis type theorems for Majorana models with discrete symmetries Open
We prove two Lieb-Schultz-Mattis type theorems that apply to any translationally invariant and local fermionic d-dimensional lattice Hamiltonians for which fermion-number conservation is broken down to the conservation of fermion parity. W…
View article: Stability against contact interactions of a topological superconductor in two-dimensional space protected by time-reversal and reflection symmetries
Stability against contact interactions of a topological superconductor in two-dimensional space protected by time-reversal and reflection symmetries Open
We study the stability of topological crystalline superconductors in the symmetry class DIIIR and in two-dimensional space when perturbed by quartic contact interactions. It is known that no less than eight copies of helical pairs of Major…
View article: Stability of a topological superconductor in two-dimensional space protected by time-reversal and reflection symmetries against contact interactions
Stability of a topological superconductor in two-dimensional space protected by time-reversal and reflection symmetries against contact interactions Open
We study the stability of topological crystalline superconductors in the symmetry class DIIIR and in two-dimensional space when perturbed by quartic contact interactions. It is known that no less than eight copies of helical pairs of Major…
View article: Using Uniaxial Stress to Probe the Relationship between Competing Superconducting States in a Cuprate with Spin-stripe Order
Using Uniaxial Stress to Probe the Relationship between Competing Superconducting States in a Cuprate with Spin-stripe Order Open
We report muon spin rotation and magnetic susceptibility experiments on in-plane stress effects on the static spin-stripe order and superconductivity in the cuprate system La_{2-x}Ba_{x}CuO_{4} with x=0.115. An extremely low uniaxial stres…
View article: Testing of asymptomatic individuals for fast feedback-control of COVID-19 pandemic
Testing of asymptomatic individuals for fast feedback-control of COVID-19 pandemic Open
We argue that frequent sampling of the fraction of a priori non-symptomatic but infectious humans (either by random or cohort testing) significantly improves the management of the COVID-19 pandemic, when compared to intervention strategies…
View article: Using random testing in a feedback-control loop to manage a safe exit from the COVID-19 lockdown
Using random testing in a feedback-control loop to manage a safe exit from the COVID-19 lockdown Open
We argue that frequent sampling of the fraction of infected people (either by random testing or by analysis of sewage water), is central to managing the COVID-19 pandemic because it both measures in real time the key variable controlled by…
View article: Using random testing to manage a safe exit from the COVID-19 lockdown
Using random testing to manage a safe exit from the COVID-19 lockdown Open
We argue that frequent sampling of the fraction of infected people (either by random testing or by analysis of sewage water), is central to managing the COVID-19 pandemic because it both measures in real time the key variable controlled by…
View article: Spiral order from orientationally correlated random bonds in classical XY models
Spiral order from orientationally correlated random bonds in classical XY models Open
We discuss the stability of ferromagnetic long-range order in three-dimensional classical XY ferromagnets upon substitution of a small subset of equally oriented bonds by impurity bonds, on which the ferromagnetic exchange J⊥>0 is replaced…
View article: Topological many-body scar states in dimensions one, two, and three
Topological many-body scar states in dimensions one, two, and three Open
We propose an exact construction for atypical excited states of a class of\nnon-integrable quantum many-body Hamiltonians in one dimension (1D), two\ndimensions (2D), and three dimensins (3D) that display area law entanglement\nentropy. Th…
View article: CCDC 1822363: Experimental Crystal Structure Determination
CCDC 1822363: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 1822362: Experimental Crystal Structure Determination
CCDC 1822362: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 1822364: Experimental Crystal Structure Determination
CCDC 1822364: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 1822361: Experimental Crystal Structure Determination
CCDC 1822361: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Ground-state degeneracy of non-Abelian topological phases from coupled wires
Ground-state degeneracy of non-Abelian topological phases from coupled wires Open
We construct a family of two-dimensional non-Abelian topological phases from coupled wires using a non-Abelian bosonization approach. We then demonstrate how to determine the nature of the non-Abelian topological order (in particular, the …
View article: Model of spin liquids with and without time-reversal symmetry
Model of spin liquids with and without time-reversal symmetry Open
We study a model in (2+1)-dimensional spacetime that is realized by an array\nof chains, each of which realizes relativistic Majorana fields in\n(1+1)-dimensional spacetime, coupled via current-current interactions. The\nmodel is shown to …
View article: Quantum phase transitions beyond Landau-Ginzburg theory in one-dimensional space revisited
Quantum phase transitions beyond Landau-Ginzburg theory in one-dimensional space revisited Open
The phase diagram of the quantum spin-1/2 antiferromagnetic\n$J^{\\,}_{1}$-$J^{\\,}_{2}$ XXZ chain was obtained by Haldane using bosonization\ntechniques. It supports three distinct phases for $0\\leq\nJ^{\\,}_{2}/J^{\\,}_{1}<1/2$, i.e., a…
View article: Hierarchical Majoranas in a programmable nanowire network
Hierarchical Majoranas in a programmable nanowire network Open
We propose a hierarchical architecture for building “logical” Majorana zero modes using “physical” Majorana zero modes at the Y-junctions of a hexagonal network of semiconductor nanowires. Each Y-junction contains three “physical” Majorana…
View article: Spin fluctuation induced Weyl semimetal state in the paramagnetic phase of EuCd2As2
Spin fluctuation induced Weyl semimetal state in the paramagnetic phase of EuCd2As2 Open
Weyl fermions as emergent quasiparticles can arise in Weyl semimetals (WSMs) in which the energy bands are nondegenerate, resulting from inversion or time-reversal symmetry breaking. Nevertheless, experimental evidence for magnetically ind…