Pairing gap from repulsion scales as ℓ
Zero-sound resummation of the Kohn anomaly makes high-partial-wave pairing exponentially stronger.
nucl-th
Nuclear Theory
Nuclear Theory Theory of nuclear structure covering wide area from models of hadron structure to neutron stars. Nuclear equation of states at different external conditions. Theory of nuclear reactions including heavy-ion reactions at low and high energies. It does not include problems of data analysis, physics of nuclear reactors, problems of safety, reactor construction
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Pion cloud sets proton's TMD tail with no free parameters
The d-bar minus u-bar asymmetry falls exponentially at large transverse separation, something perturbative QCD cannot produce.
This paper studies dense quark matter where quarks pair into spin-one Cooper pairs
In spin-one color superconductors, the topological node count is set by a generalized pairing monopole charge that includes color Berry…
Neutron-star matter must stiffen
A 2.35-solar-mass pulsar and causality force a stiff first segment, then a soft second; phase transitions appear only at the top.
Hidden-strangeness baryon decays mostly to KΛ(1405)
Loop-based widths put πN*(1535) on par with πN, making KπΣ final states a realistic search channel.
Dark matter in quark stars can explain two odd compact objects
Light dark matter forms halos, heavy dark matter forms cores; both known objects fall in the allowed ranges.
· “Dark matter effects on the properties of quark stars and the implications for the peculiar objects”
Zc(3900) pole position decides if DDD* is bound
Measure the Zc(3900) pole: it tells whether the three-hadron DDD* state is bound or not.
· “Constraining the DDD^* three-body bound state via the Z_c(3900) pole”
Block Lanczos supersedes GEVP for lattice QCD spectra
One GEVP solve is a single Lanczos step; further steps converge faster and give two-sided error bounds.
· “Block Lanczos algorithm for lattice QCD spectroscopy and matrix elements”
Kaon condensates reproduce two light neutron stars at once
One equation of state with $K^{-}$ and $\bar{K}^{0}$ condensates fits both XTE J1814-338 and HESS J1731-347 simultaneously.
Shell model reproduces summed Gamow-Teller strengths in five nuclei
Matched sums validate the interactions for electron-capture inputs; high-energy peaks await experiment.
· “Gamow-Teller transition strengths for selected {fp} shell nuclei”
Adjoint quarkonium correlators equal rescaled fundamental ones
If right, quarkonium diffusion coefficients are just Casimir multiples of the heavy-quark value.
Bottomonia survive hot QCD with unchanged masses to 251 MeV
Thermal widths grow with temperature and state size, reshaping how quarkonium melts in heavy-ion collisions.
· “In-medium bottomonium properties from lattice NRQCD calculations with extended meson operators”
DD-ME2 deformation beats alternatives for A≈70 half-lives
Feeding DD-ME2's quadrupole deformation into pn-QRPA matches measured lifetimes across eight rp-process nuclei.
· “Reexamination of nuclear structure properties and shape coexistence of nuclei around A70”
Rotation can strengthen chiral symmetry breaking in quark matter
Fitting the quark model's coupling to lattice data reverses rotation's effect and lifts the critical endpoint.
· “Chiral vortical catalysis constrained by LQCD simulations”
New K radii: isospin breaking in A=38 is zero within error
Precise isotope-shift calculations benchmark the corrections needed to extract Vud from superallowed beta decays.
Strong fields boost magnetar neutrino absorption tenfold
At fields above 10^16 gauss, quantum electron levels create density resonances and lift Pauli blocking in merger ejecta.
· “Effects of Landau quantization on neutrino emission and absorption”
Quark model predicts exotic tetraquarks near 7.1 GeV
New narrow states with forbidden quantum numbers could appear in J/ψ pair data; X(6400) and X(6600) remain unexplained.
· “Fully charmed P-wave tetraquark resonant states in the quark model”
Metropolis simulation gives z≈3 in 3D
A stochastic fluid-dynamics algorithm confirms model-H critical scaling and tracks the z=4-to-critical crossover.
Gluon saturation wins in J/psi photoproduction off lead
Comparing nonlinear BK and linear BFKL evolutions, only the saturation-aware curve matches the measured nuclear suppression.
· “Gluon Saturation Effects in Exclusive Heavy Vector Meson Photoproduction”
73,75Br proton removal yields equal cross sections into 72,74Se
Matching cross sections into 72Se and 74Se suggest the same proton orbitals drive both reactions.
· “Proton removal from ^(73,75)Br to ^(72,74)Se at intermediate energies”
Double-beta decay amplitude predicted at next-to-leading order
First uncertainty-quantified EFT value for the elementary decay process could shrink nuclear matrix element errors.
· “Next-to-leading-order prediction for the neutrinoless double-beta decay”
AI fit finds the missing 28Si toroidal peaks
A Gaussian mixture analysis of 7-alpha spectra finds peaks near 114 and 138 MeV in both disputed datasets.
· “AI-Assisted analysis of ²⁸Si^* rightarrow 7α break-up data”
K=7 is the cutoff that fixes the ppp correlation tail
With up to 23 coupled channels, the calculated ppp tail matches the measured one within about two standard deviations.
· “Convergence of the ppp correlation function within the hyperspherical adiabatic basis”
Radial-flow fits get a hotter freeze-out from v0(pT)
Blast-wave model with flow and temperature fluctuations explains the new v0(pT) data and yields hotter freeze-out than pT-spectra fits.
· “Study of p_T-differential radial flow in blast-wave model”
India's decade for compact-object astrophysics
AstroSat, uGMRT, XPoSat and future detectors can probe dense matter and extreme gravity.
· “Astrophysics with Compact Objects: An Indian Perspective, Present Status and Future Vision”
Imaginary rotation turns fermion temperature into a fractal
At rational p/q, Dirac fermions cool to T/q; the chemical potential stays put.
Pulsar's 709 Hz spin tightens neutron-star equation of state
Ignoring rotation skews dense-matter inference; with spin included, the star's true non-rotating mass drops to ~2.1 solar masses.
· “PSR J0952-0607: Probing the Stiffest Equations of State and r-Mode Suppression Mechanisms”
A neutron pair explains the disputed 8^- isomer in nobelium-254
The same calculation predicts a low-energy 0+ pairing vibration that would test neutron pairing at N=152.
· “Low-energy spectra of nobelium isotopes: Skyrme random-phase-approximation analysis”
HAL QCD binding energies survive the left-hand cut
Even when a bound state sits on the pion-exchange cut, the HAL QCD pole converges to the exact binding momentum.
Chiral dynamics still underpins low-energy QCD
A status review shows pion-pion, nuclear, and Big Bang results all still need the chiral QCD framework.
A density-only functional reproduces deformed 20Ne
Trained on random potentials, it matches Kohn-Sham deformation and energies without single-particle orbitals.
Vector-meson spin alignment starts only at second order
Local-equilibrium statistical operator gives ρ00=1/3 to first order; shear and vorticity act only at second order.
· “Spin alignment of vector mesons in local equilibrium by Zubarev's approach”
Knockout reactions reveal what exotic nuclei are made of
Distorted-wave theory plus CDCCIA maps measured cross sections to orbits, pairs, and alpha clusters.
· “Reaction mechanism of quasi-free knockout processes in exotic RI beam era”
New projections make all eight gluon GPDs computable on the lattice
Exact projections let first-principles lattice QCD reach all eight gluon GPDs.
Black holes form by four channels
3D simulations trace energetic explosions, late fallback, aborted blasts, and quiet collapse to stellar-mass black holes.
Timelike hyperon form factors: theory fits
Review says final-state interactions set threshold shapes and vector-meson models set the continuum; the open problems are experimental.
· “Electromagnetic form factors of hyperons in the timelike region: A short review”
Vortex signal places QCD deconfinement at twice the chiral transition
At pion mass 239 MeV, centre vortex percolation survives to T = 321(6) MeV, hinting quarks stay confined past chiral restoration.
· “Centre vortex evidence for a second finite-temperature QCD transition”
One number links nuclear binding energy to charge radius
A measured mirror partner's mass and radius predict the proton-rich side's size and binding.
· “Robust correlation between binding energies and charge radii of mirror nuclei”
Late mean-field potential, not squeeze-out, sets negative v2
UrQMD shows that after the last collision the potential still shapes v2; the final value reflects breakup geometry.
Slow rotation rewrites a Bose gas' condensation law
A rigidly rotating gas condenses at a lower critical temperature and with a new critical exponent.
· “Bose-Einstein condensation in a rigidly rotating relativistic boson gas”
Mercury's hyperfine anomaly measured: rule constant near zero
Fifty years untested; the new fit puts the constant near zero, sharpening mercury clocks and EDM searches.
· “The hyperfine anomaly in mercury and test of the Moskowitz-Lombardi rule”
Chain and triangle vibrations appear in fused carbon-12
A simulation finds a 9 MeV chain mode that decays into a 4 MeV triangular mode, shaped by the collision geometry.
· “A time-dependent Hartree-Fock study of triple-alpha dynamics”
A new thermal phase of QCD may appear between 200 and 230 MeV
Deep infrared quark modes proliferate and turn critical, tying the quark-gluon plasma to Anderson localization.
Splitting nuclear responses fixes low-energy neutrino predictions
A q-dependent transverse scaling function replaces one universal curve and sharpens fits to electron and neutrino data.
First precise rates for rho0-plus-dimuon coincidences match LHC data
A percent-level coincident background is now calculable, and its ZDC and kinematic dependence matches measurement.
· “Modelling Coincident Particle Production in Ultraperipheral Heavy Ion Collisions”
Dense quark matter gap stays constant as baryon density grows
One-loop renormalization of the CFL phase fixes the pairing gap and sends sound speed to the conformal limit from above.
· “Renormalization of the three-flavor quark-meson diquark model”
Transport plus decay tail reproduces low-q proton correlations
Fitting two parameters to the imaged source assigns 62% of proton pairs to long-lived secondary emission
· “Transport Theory and Correlation Measurements: Coming to Terms on Emission Sources”
Two heavy-ion runs disagree on the hypertriton's binding energy
Strange nuclei test the strong force in a few-body setting; new data may settle three open puzzles.
Orbifold lattice recovers Kogut-Susskind Hamiltonian exactly
Infinite-mass limit turns the orbifold action into the Wilson action with Haar measure, enabling efficient quantum circuits.
· “Exponential speedup in quantum simulation of Kogut-Susskind Hamiltonian via orbifold lattice”
Neutron-star cooling threshold melts at 1 MeV
Review: the sharp direct-Urca cutoff is a zero-temperature artifact, and short-range correlations cut emissivity by up to 50%.
Sharpened charge-radius kinks flag magic numbers at N=8
A Fermi-surface pairing term amplifies radius jumps at magic neutron numbers and fixes the N=14 puzzle in Mg.
Negativity of any pure qubit-qudit state is just √A
One determinant also sets proton spin-orbit entanglement via gluon helicity and a Hermitian angle.
· “Entanglement Negativity of Spin-Orbit Correlations in a general Qubit-Qudit Setup”
Neutron stars can reach 716 Hz in 'forbidden' territory
General-relativistic models show rotation expands the mass–radius space for millisecond pulsars.
Quantum computer simulates particle scattering in a gauge theory
IBM hardware tracks electron-positron and meson collisions past impact, showing confinement and scar-like inelastic dynamics.
· “Observation of hadron scattering in a lattice gauge theory on a quantum computer”
Fast liquid-drop model matches Thomas-Fermi
The liquid-drop equation of state stays reliable up to 2 MeV, but neutron-skin microphysics needs the fuller model.
Two QCD theories stitched into one neutron-star EOS
Gaussian-process mixing of chiral EFT and pQCD yields mass-radius curves consistent with current neutron-star observations.
If hyperons lurk in neutron stars
Hyperonic stars above this mass would collapse to black holes; heavier pulsars would rule hyperons out.
· “Constraints on maximum neutron star mass from proto-neutron star evolution”
Pasta forms in neutron stars at a near-universal filling fraction
Curvature, not the nuclear interaction, sets when spheres morph into spaghetti, lasagna, and bubbles.
No equation of state needed: GW170817 fixes tidal deformability at 223
Straight-line interpolation between the two merger stars yields a model-free 223 (+420, -99) benchmark for dense-matter theory.
Odd harmonics split elliptic flow left and right
TRENTo-3D plus hydro predicts v1 shapes rapidity while v3 shapes pT dependence, with testable numbers.
Two-color QCD chiral transition can be second order
New stable fixed points appear in FRG, allowing a continuous transition if the axial anomaly vanishes at T_c.
Most B_c mesons melt in the quark-gluon plasma
Transport model: recombination at low pT and fragmentation at high pT rebuild the LHC B_c yield.
Sapphire detector study finds stronger light-mediator limits
One year of reactor antineutrinos would also gauge the weak mixing angle to ~7% and probe neutrino magnetic moments at 10⁻¹¹ μ_B.
One effective theory unifies DIS and heavy-ion collisions
A review argues that saturated gluons tie electron-proton scattering to the quark-gluon plasma's birth.
Off-shell nucleon recipes shift neutrino rates by up to 10%
DUNE's few-percent error budget cannot absorb the 2–10% spread among standard off-shell treatments.
For every partial wave, compositeness equals the outside probability
The bound-state pole's residue measures how far the wave function extends beyond the potential, exactly.
· “A variation on "compositeness" (including higher partial waves)”
96Mo shows predicted pygmy dipole strength near neutron separation
Fully consistent HFB+QRPA calculations reveal an isovector-dominated enhancement and a mixed-mode PDR candidate.
· “Electric dipole excitations near the neutron separation energies in ⁹⁶Mo”
g_A lands on experiment: 1.250(24) from physical-point QCD
No chiral extrapolation needed: sigma_piN = 41.9(8.1) MeV and tensor/scalar charges follow from three physical-mass ensembles.
· “Nucleon axial, tensor, and scalar charges and σ-terms in lattice QCD”
Same mixing explains calcium radius dip and E0 strengths
Wave functions fitted to energy levels reproduce the 48Ca radius dip and the E0 strengths of 44Ca and 48Ca.
· “Nuclear size, electric monopole transitions, and the location of 0^+₂ states”
Primordial Higgs never reached equilibrium: 31% short
Virtual W and Z decays break detailed balance, leaving the Higgs cold below 25 GeV.
Photons from jets now have complete perturbative kernels
Two single-scattering kernels add photon channels to parton energy loss, including flavor and coherence effects.
Gapped electron gas yields exact kinetic and exchange energies
Leading correlation term also derived, opening a route to state-specific density functionals.
Measured hadron spectra are chaotic
Mass-spacing statistics of baryons and mesons match random-matrix theory; quark models and lattice QCD mostly do not.
· “Spectral-statistics properties of the experimental and theoretical light baryon and meson spectra”
TOV derivatives expose quark-matter phase transitions
Analytic gradients make Bayesian inference fast enough to spot a strong phase transition from 20 mass-radius measurements.
Relativistic nuclear force matches standard accuracy at lower order
Covariant chiral force reproduces NN scattering to 200 MeV with fast convergence, aiding ab initio nuclear theory.
· “Relativistic chiral nuclear forces: status and prospects”
Photon data can confirm proton-neutron dominance in nuclei
Two cross-section ratios also test whether a photon's hard hit cleanly separates from nuclear structure.
· “Observing short-range correlations in nuclei through rho⁰ photo-production”
Autoencoder turns neutron star signals into an equation of state
It recovers dense-matter EoS parameters from mass, radius, and tidal deformability, with uncertainty bands.
· “Explainable autoencoder for neutron star dense matter parameter estimation”
Corrected sum rules reshape the K0*(1430) meson
A quark-separation correction yields a four-peak distribution amplitude and B_s-to-K0* form factors.
· “Study on the Distribution Amplitude of the Scalar Meson K₀^*(1430)”
One code now automates NLO QCD for proton-nucleus collisions
Extension of MadGraph5_aMC@NLO validates on pPb W/Z and pion-tungsten Drell-Yan, with automatic uncertainties.
· “Automated NLO calculations for asymmetric hadron-hadron collisions in MadGraph5_aMC@NLO”
Hot plasma broadens bottomonia but leaves their masses intact
Up to 3S and 3P states persist with vacuum masses, pointing to broadening, not screening.
· “Non-relativistic QCD Study of Excited Bottomonia at Finite Temperatures on a Fine Lattice”
