Anderson impurity model
View article: Valence band-satellite, temperature dependent magnetic and spectral study of α-Fe
Valence band-satellite, temperature dependent magnetic and spectral study of α-Fe Open
We investigate the influence of correlations and plasmonic excitation on valence band-satellite of $α$-Fe, along with magnetic and spectral properties as function of temperature. Coulomb interaction parameters are obtained by systematicall…
View article: Layer-Resolved Impurity States Reveal Competing Pairing Mechanisms in Trilayer Nickelate Superconductor La$_4$Ni$_3$O$_{10}$
Layer-Resolved Impurity States Reveal Competing Pairing Mechanisms in Trilayer Nickelate Superconductor La$_4$Ni$_3$O$_{10}$ Open
Trilayer Ruddlesden-Popper nickelate superconductor $\mathrm{La}_4 \mathrm{Ni}_3 \mathrm{O}_{10}$ has generated considerable interest due to its unconventional superconductivity and complex electronic structure. Notably, $\mathrm{La}_4 \ma…
View article: Layer-Resolved Impurity States Reveal Competing Pairing Mechanisms in Trilayer Nickelate Superconductor La$_4$Ni$_3$O$_{10}$
Layer-Resolved Impurity States Reveal Competing Pairing Mechanisms in Trilayer Nickelate Superconductor La$_4$Ni$_3$O$_{10}$ Open
Trilayer Ruddlesden-Popper nickelate superconductor $\mathrm{La}_4 \mathrm{Ni}_3 \mathrm{O}_{10}$ has generated considerable interest due to its unconventional superconductivity and complex electronic structure. Notably, $\mathrm{La}_4 \ma…
View article: Valence band-satellite, temperature dependent magnetic and spectral study of α-Fe
Valence band-satellite, temperature dependent magnetic and spectral study of α-Fe Open
We investigate the influence of correlations and plasmonic excitation on valence band-satellite of $α$-Fe, along with magnetic and spectral properties as function of temperature. Coulomb interaction parameters are obtained by systematicall…
View article: Non-Hermitian off-diagonal disordered optical lattices
Non-Hermitian off-diagonal disordered optical lattices Open
Within the framework of non-Hermitian photonics, we investigate the spectral and dynamical properties of one- and two-dimensional non-Hermitian off-diagonal disordered optical lattices, where randomness is applied to the couplings rather t…
View article: Non-Hermitian off-diagonal disordered optical lattices
Non-Hermitian off-diagonal disordered optical lattices Open
Within the framework of non-Hermitian photonics, we investigate the spectral and dynamical properties of one- and two-dimensional non-Hermitian off-diagonal disordered optical lattices, where randomness is applied to the couplings rather t…
View article: Anderson localization of quantum droplets in disordered potentials
Anderson localization of quantum droplets in disordered potentials Open
We study Anderson localization of a one-dimensional quantum droplet in a speckle-like potential employing the generalized Gross-Pitaevskii equation. We compute the droplet width, density profiles, diffusion exponent and coefficient, and th…
View article: Anderson localization of quantum droplets in disordered potentials
Anderson localization of quantum droplets in disordered potentials Open
We study Anderson localization of a one-dimensional quantum droplet in a speckle-like potential employing the generalized Gross-Pitaevskii equation. We compute the droplet width, density profiles, diffusion exponent and coefficient, and th…
View article: P ≠ NP: A Research Direction via Critical Exponents and the 73/27 Split
P ≠ NP: A Research Direction via Critical Exponents and the 73/27 Split Open
We explore P vs NP through statistical physics of phase transitions. Empirical validation via solution space random walks on random 3-SAT instances reveals a universal 73/27 split between frozen and free variables at condensation threshold…
View article: P ≠ NP: A Research Direction via Critical Exponents and the 73/27 Split
P ≠ NP: A Research Direction via Critical Exponents and the 73/27 Split Open
We explore P vs NP through statistical physics of phase transitions. Empirical validation via solution space random walks on random 3-SAT instances reveals a universal 73/27 split between frozen and free variables at condensation threshold…
View article: Charge carrier relaxation dynamics in the one-dimensional Kondo lattice model
Charge carrier relaxation dynamics in the one-dimensional Kondo lattice model Open
A generic question in the field of ultrafast dynamics is concerned with the relaxation dynamics and the subsequent thermalization of optically excited charge carriers. Among several possible relaxation channels available in a solid-state s…
View article: Anderson transition symmetries at the band-edge of a correlated Sn/Si monolayer
Anderson transition symmetries at the band-edge of a correlated Sn/Si monolayer Open
View article: Universal Critical Scaling and Phase Diagram of the Non-Hermitian Skin Effect under Disorder
Universal Critical Scaling and Phase Diagram of the Non-Hermitian Skin Effect under Disorder Open
Standard scaling theory dictates that disorder leads to immediate localization in one-dimensional Hermitian systems. We demonstrate that non-Hermitian topology fundamentally alters this paradigm, protecting transport up to a substantial cr…
View article: Topological surface-state destruction via trivializing proximity effect: Lattice localization despite continuum criticality
Topological surface-state destruction via trivializing proximity effect: Lattice localization despite continuum criticality Open
In a significant conceptual revision to the tenfold classification scheme for topological insulators and superconductors, it was recently demonstrated that most three-dimensional (3D) classes are simultaneously "localizable" in two distinc…
View article: De la transition de percolation à la localisation d'Anderson dans les potentiels speckle unidimensionnels.
De la transition de percolation à la localisation d'Anderson dans les potentiels speckle unidimensionnels. Open
Classical particles in random potentials typically experience a percolation phase transition, being trapped in clusters of mean size $χ$ that diverges algebraically at a percolation threshold. In contrast, quantum transport in random poten…
View article: Non-Hermitian impurity problem
Non-Hermitian impurity problem Open
The problem of a single Hermitian impurity has long served as a cornerstone in condensed matter physics, offering fundamental insights into the mechanisms of Anderson localization. Yet, despite the increased interest in the spectral and lo…
View article: Functional renormalization with interaction flows: A single-boson exchange perspective and application to electron-phonon systems
Functional renormalization with interaction flows: A single-boson exchange perspective and application to electron-phonon systems Open
The functional renormalization group (fRG) is acknowledged as a powerful tool in quantum many-body physics and beyond. On the technical side, conventional implementations of the fRG rely on regulators for bare propagators only. Starting fr…
View article: Probing Boundary Spins in the Su-Schrieffer-Heeger-Hubbard model
Probing Boundary Spins in the Su-Schrieffer-Heeger-Hubbard model Open
Studying boundary excitations provides a powerful approach to probe correlations in topological phases. We propose that localized spins near the ends of a Su-Schrieffer-Heeger-Hubbard chain embedded in an insulating environment can be dete…
View article: Functional renormalization with interaction flows: A single-boson exchange perspective and application to electron-phonon systems
Functional renormalization with interaction flows: A single-boson exchange perspective and application to electron-phonon systems Open
The functional renormalization group (fRG) is acknowledged as a powerful tool in quantum many-body physics and beyond. On the technical side, conventional implementations of the fRG rely on regulators for bare propagators only. Starting fr…
View article: Non-Hermitian impurity problem
Non-Hermitian impurity problem Open
The problem of a single Hermitian impurity has long served as a cornerstone in condensed matter physics, offering fundamental insights into the mechanisms of Anderson localization. Yet, despite the increased interest in the spectral and lo…
View article: Probing Boundary Spins in the Su-Schrieffer-Heeger-Hubbard model
Probing Boundary Spins in the Su-Schrieffer-Heeger-Hubbard model Open
Studying boundary excitations provides a powerful approach to probe correlations in topological phases. We propose that localized spins near the ends of a Su-Schrieffer-Heeger-Hubbard chain embedded in an insulating environment can be dete…
View article: From percolation transition to Anderson localization in one-dimensional speckle potentials
From percolation transition to Anderson localization in one-dimensional speckle potentials Open
Classical particles in random potentials typically experience a percolation phase transition, being trapped in clusters of mean size $χ$ that diverges algebraically at a percolation threshold. In contrast, quantum transport in random poten…
View article: <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>UTe</mml:mi> <mml:mn>2</mml:mn> </mml:msub> </mml:math> : A narrow-band superconductor
: A narrow-band superconductor Open
We investigate the nature of the 5 f electrons in the unconventional odd-parity superconductor UTe 2 , focusing on the degree of covalency, localization versus itinerancy, and dominant electronic configuration. This is achieved usi…
View article: From percolation transition to Anderson localization in one-dimensional speckle potentials
From percolation transition to Anderson localization in one-dimensional speckle potentials Open
Classical particles in random potentials typically experience a percolation phase transition, being trapped in clusters of mean size $χ$ that diverges algebraically at a percolation threshold. In contrast, quantum transport in random poten…
View article: Tail Bounds for the Dyson Series of Random Schrödinger Equations
Tail Bounds for the Dyson Series of Random Schrödinger Equations Open
We study Schrödinger equations on $$\mathbb {Z}^d$$ and $$\mathbb {R}^d$$ , $$d\ge 2$$ with random potentials of strength $$\lambda $$ . Our main result gives tail bounds for the terms of the Dyson series that are effectiv…
View article: Impurity-induced bound states in BCS superconductor: The role of Rashba spin-orbit and non-linear electron-phonon interactions
Impurity-induced bound states in BCS superconductor: The role of Rashba spin-orbit and non-linear electron-phonon interactions Open
We have theoretically studied the influence of linear, non-linear electron-phonon interactions and Rashba spin orbit interaction on formation of the localized magnetic moment and subgap Yu-Shiba-Rusinov bound state for a single-level quant…
View article: Exact Analytical Results for the 1D Ising Chain with Periodic Impurity Fields
Exact Analytical Results for the 1D Ising Chain with Periodic Impurity Fields Open
We present an exact analytical solution for the one-dimensional Ising model in the presence of an external magnetic field applied periodically to every $k$-th site. The problem is handled using the symmetrized transfer matrix approach, we …
View article: Exponential Suppression of Transport in Electric Quantum Walks
Exponential Suppression of Transport in Electric Quantum Walks Open
We establish exact scalings for the maximal group velocity of translation-invariant quantum walks in periodic electric fields. Our main result shows that the maximal group velocity decays exponentially with the period of the field in the w…
View article: Exact Analytical Results for the 1D Ising Chain with Periodic Impurity Fields
Exact Analytical Results for the 1D Ising Chain with Periodic Impurity Fields Open
We present an exact analytical solution for the one-dimensional Ising model in the presence of an external magnetic field applied periodically to every $k$-th site. The problem is handled using the symmetrized transfer matrix approach, we …
View article: Exponential Suppression of Transport in Electric Quantum Walks
Exponential Suppression of Transport in Electric Quantum Walks Open
We establish exact scalings for the maximal group velocity of translation-invariant quantum walks in periodic electric fields. Our main result shows that the maximal group velocity decays exponentially with the period of the field in the w…