High Energy & Particle · Physics & Astronomy
High Energy Physics - Theory
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196 papers, from 16 September 2026 to 5 November 2026: 196 arXiv preprints.
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Newest papers, page 5
Nambu-Goldstone Bosons and Quantum Fisher Information
The quantum Fisher matrix and geometric tensor are powerful tools for quantifying the nature of quantum systems.Rényi multi-entropy of graph states and the $n -> 1$ limit
Rényi multi-entropy extends the Rényi entropy to pure states of more than two parties.A group theoretic calculation of multi-invariants of some stabilizer states
We study multi-invariants---a multi-partite generalization of Renyi entropies---of simple stabilizer states, for an arbitrary replica symmetry group.Squeezing and Decoherence of Axion Dark Matter
Bosonic particles beyond the Standard Model, such as axions, are among the leading candidates for dark matter.Where should we look for the deviation from quantum mechanics?
We argue that the experimental measurement of the lifetime and decay law of metastable helium is a promising way to find a deviation from quantum mechanics.Liouvillian Non-Invertible Symmetry
Non-invertible symmetries extend conventional symmetries beyond group-like transformations and play an important role in quantum field theory and many-body physics.Anticommuting Displacement Operators, Exact Pauli Algebras,and the Singlet State from the Oscillator Vacuum
We give an explicit construction of a pair of anticommuting Weyl displacement operators for a harmonic oscillator and use bounded functional calculus to obtain exact dichotomic representatives of…Holographic two-point functions across a PT symmetry-breaking transition
In parity-time (PT)-symmetric non-Hermitian systems, an exceptional point, where eigenvalues and eigenvectors coalesce, typically separates a real spectrum from complex-conjugate eigenvalues.Anyonic Neural Network Wavefunctions
The macroscopic behavior of a non-interacting gas of Abelian anyons has remained unsettled for many decades.Electric Flux as a Criterion for String Breaking and Schwinger Pair Production
We define string breaking by the midpoint electric field falling to half a flux unit.One generation of the Standard Model as a quantum error-correcting code
Together with a right-handed neutrino, the fermions of one generation of the Standard Model are labelled by five bits, a combinatorial structure tied to anomaly cancellation.Dilaton-Axion Wormhole Partition Function Away from the BPS Endpoint
I determine the leading finite-radius correction to the two-boundary response of a charged axion wormhole near its BPS endpoint.How do late-time photons "record" primordial curvature perturbations?
Inflationary cosmology faces a fundamental gap between primordial quantum fluctuations and the classical cosmic history inferred from observations.Minimal-length kinematics of coherent light and a proposed two-color vacuum chronoscopy
The unification of quantum theory and general relativity suggests the existence of a minimal measurable length, leading to a generalized uncertainty principle (GUP) and an energy-dependent vacuum…Multi-Instantons and Exact-WKB Stokes Jumps in Multi-Well Quantum Mechanics
We study the relation between the exact-WKB Delabaere--Dillinger--Pham Stokes jumps and the multi-instanton expansion of a one-dimensional potential with $N$ equal-depth minima.Degeneracy graph determinants and higher-dimensional Young diagrams
Kemp and Ramgoolam proposed a basis of monomials for a commutative semisimple algebra with generators \(C_1,\ldots, C_L\), constructed from a degeneracy graph which records how the eigenspaces of \(…Efficient numerical evolution of self-gravitating systems with dark-matter-baryon scattering
We present a fast algorithm to numerically evolve a spherically symmetric system consisting of dark matter and gas, including dark-matter-baryon scattering.Finite-cutoff geometry from double-scaled SYK
We develop a finite-cutoff holographic description of the double-scaled SYK (DSSYK) model.The Magic Barrier: A Universal Feature of Quantum Thermalization
We show that the emergence of a ``magic barrier'', characterized by a transient maximum of nonstabilizerness during rapid entanglement growth, is a universal feature of thermalization within quantum…Infinite magic and the emergence of the continuum
Which features of a quantum state are needed for a relativistic quantum field theory to emerge from a lattice system?