Quantum Physics · Physics & Astronomy
Quantum Physics
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3,630 papers, from 4 September 2026 to 5 November 2026: 3,630 arXiv preprints.
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Newest papers, page 179
A Quantum Phase-based Comparator
Quantum comparators decide the order of two operands.Weyl Chirality and Kitaev Topology through Bargmann Invariants
We apply a finite-state geometric formulation based on Bargmann invariants to a two-band Weyl Hamiltonian and the one-dimensional Kitaev model of a p-wave superconductor.Effective Study of Superconducting Quantum Circuits
We apply the momentous quantum mechanics formalism to the non-perturbative study of superconducting circuits in the transmon regime, deriving effective equations of motion for the bare Josephson…Thermalization and dephasing in an isolated system of coupled qubits
A system evolving unitarily does not dephase or thermalize by definition.Superradiant Mpemba Relaxation in a Dicke Ladder
The Mpemba effect occurs when a state initially farther from stationarity overtakes a closer one during relaxation.Operator-Level Quantum-Classical Correspondence in Relativistic Quantum Theory and Curved Spacetime
In a recent work \cite{Shaikh:2026nsi}, it was shown that for a non-relativistic particle, the operator equations of motion can be cast in the same differential form as Newton's equation of motion.Low-rank propagation for tridiagonalizable open quantum systems: near-linear scaling with system size
The quadratic growth of the density matrix with Hilbert-space dimension D is the central obstacle to simulating large open quantum systems.Complementarity Test with Unmeasured, Permanently Inaccessible Path Markers
In prior complementarity tests, path markers were measured and remained causally accessible, leaving the collapse-locality loophole open.Random Gaussian Augmented Matrix Product States
Strong entanglement limits the reach of tensor-network descriptions of quantum many-body systems.Sharper Bounds for the Complex Grothendieck Constant
We show that $1.4<K_G^{\mathbb{C}}<1.404898554746$, where $K_G^{\mathbb{C}}$ is the complex Grothendieck constant.Bi-Oriented Interlaced Matrix Multiplication and an Operator Factorisation of the Quantum Harmonic Oscillator
We introduce a bi-oriented interlaced matrix product on $2\times 2$ matrices over a unital, possibly non-associative algebra, extending a matrix mnemonic for Cayley--Dickson doubling.Stochastic Reconfiguration as Statistical Filtering for Overparameterized Neural Quantum States
Stochastic reconfiguration (SR) is the standard optimizer for neural quantum states (NQS), but modern NQS often have far more parameters than Monte Carlo samples.Comparative Study of Quantum and Classical Machine Learning Models in Binary Classification
A potential path forward is Quantum Machine Learning (QML), which aims to leverage quantum computing in conjunction with classical machine learning to enhance computing efficiency and the…From IceCube to IT-Sphere: A Hybrid Quantum-Classical GNN for Banking IT Root Cause Analysis
We present Hybrid Quantum Root Cause Analysis (HQ-RCA), an industrially grounded workflow for root cause analysis in banking IT operations, built on a hybrid Quantum Graph Neural Network (QGNN): the…Watching Quantum Models Think: Hilbert-Space Interpretability in Quantum Transformer Blocks
Deep learning models are powerful but opaque.Adaptive Differential Evolution and Multistart Search for Noisy QAOA Optimization
We benchmark classical optimization of a fixed low-depth Quantum Approximate Optimization Algorithm (QAOA) ansatz across four cost-Hamiltonian families at $N=12$, $p=3$, and $D=6$.From Trainability Diagnostics to Optimization Claims: Boundaries and Controls in Variational Quantum Optimization
Barren plateau diagnostics characterize whether gradient signal remains available for training, but surviving signal need not translate into successful optimization.Weighted Quantum Signal Processing: Low-Depth Polynomial Approximation with Applications to Kolmogorov-Arnold Networks
Quantum Signal Processing is a powerful quantum framework for generating and approximating univariate polynomials.Guiding Agents of Quantum Games to Equilibrium using Matrix Exponential Fixed-Point Iteration
In recent years, quantum game theory has gained significant attention as a framework for studying decision-making in multi-agent systems using quantum principles.Improving Sample Efficiency in Peptide-HLA Binding Prediction with Hybrid Quantum-Classical Neural Networks
Peptide-HLA binding prediction is a critical step in neoantigen identification for personalized cancer immunotherapy and holds significant clinical value.