nucl-th papers | Gist.Science

Nuclear theory sits at the fascinating intersection of particle physics and the forces that hold our universe together. This field explores how protons and neutrons bind inside atomic nuclei, seeking to understand the fundamental interactions that govern matter at its most dense and energetic levels. While the mathematics involved can be incredibly complex, the core questions are deeply human: how does the universe function at its smallest scales, and what happens when we push matter to its limits?

At Gist.Science, we make these cutting-edge discoveries accessible by processing every new preprint published in this category on arXiv. Our team transforms dense academic manuscripts into clear, plain-language summaries alongside detailed technical overviews, ensuring that both experts and curious readers can grasp the latest breakthroughs without getting lost in the jargon. Below are the latest papers in nuclear theory, distilled and ready for you to explore.

⚛️ nuclear theory

Disentangling Flow Contributions from the Chiral Magnetic Effect in U+U Collisions with Forward-Backward Multiplicity Asymmetry

This paper proposes using forward-backward multiplicity asymmetry (FBMA) in uranium-uranium collisions as a robust control parameter to effectively disentangle the Chiral Magnetic Effect signal from flow-induced backgrounds by leveraging the correlation between FBMA and initial-state geometry while largely decoupling it from magnetic field correlations.

Kaiser Shafi, Sandeep Chatterjee2026-04-07

⚛️ high-energy theory

Causality, the Kovtun-Son-Starinets bound, and a novel sum rule for spectral densities

This paper demonstrates that the universality of the shear viscosity to entropy density ratio in Unruh radiation is fundamentally linked to causality, establishes a saturation of the bulk viscosity bound, and derives a novel sum rule for spectral densities that connects thermal isotropy in Rindler space to the validity of Pascal's law.

G. Yu. Prokhorov, O. V. Teryaev2026-04-07

⚛️ lattice

Lattice studies of chimera baryons in Sp(4) gauge theory

This paper presents non-perturbative lattice calculations of the low-lying spectrum and matrix elements of chimera baryons within a Sp(4) gauge theory, a key component of composite Higgs models, utilizing both quenched and dynamical fermion approximations.

Jong-Wan Lee, Ed Bennett, Luigi Del Debbio, Niccolò Forzano, Ryan C. Hill, Deog Ki Hong, Ho Hsiao, C. -J. David Lin, Bia (…)2026-04-07

⚛️ nuclear theory

Neural-network quantum states for solving few-body problems: application to Efimov physics

This paper extends neural-network quantum states to solve strongly interacting few-body problems in continuous space, successfully computing Efimov states and reproducing their key physical features for systems ranging from three to six identical bosons and mass-imbalanced fermions.

Sora Yokoi, Shimpei Endo, Hiroki Saito2026-04-07

⚛️ nuclear theory

Dissipative spin hydrodynamics in Bjorken flow and thermal dilepton production

This paper investigates boost-invariant spin hydrodynamics with a first-order framework, demonstrating that spin dissipation alters the temperature evolution of the expanding medium and subsequently enhances thermal dilepton production, thereby suggesting dileptons as a viable probe for spin dynamics in the quark-gluon plasma.

Sejal Singh, Sourav Dey, Arpan Das, Hiranmaya Mishra, Amaresh Jaiswal2026-04-07

⚛️ nuclear theory

Neutron star with dark matter using vector portal

This paper investigates how fermionic dark matter interacting with nucleons via a vector mediator ( $Z^\prime$ ) alters the equation of state and structural properties of neutron stars, demonstrating that observational constraints on mass, radius, and tidal deformability can limit vector portal parameters while linking astrophysical findings to terrestrial dark matter searches.

Deepak Kumar (IISER Berhampur), Ranjita K. Mohapatra (Rajdhani College), Hiranmaya Mishra (IOP,NISER), Sudhanwa Patra (I (…)2026-04-07

⚛️ nuclear theory

Rigid triaxiality has the SU(3) symmetry: $^{166}$ Er as an example

This paper demonstrates that the nucleus $^{166}$ Er exhibits rigid triaxiality with a deformation angle of $\gamma=9.7^{\circ}$ rather than a prolate shape, a conclusion supported by the SU(3)-IBM framework including higher-order interactions which accurately reproduces experimental energy spectra, transition strengths, and quadrupole moments.

Chunxiao Zhou, Xue Shang, Tao Wang2026-04-07

⚛️ nuclear theory

Halo Nuclei from Ab Initio Nuclear Theory

This paper reviews the application of the ab initio no-core shell model with continuum (NCSMC) approach, utilizing chiral nuclear forces to unify the description of bound and unbound states in light halo nuclei such as $^6$ He, $^8$ B, $^{11}$ Be, and $^{15}$ C, while also addressing challenges in modeling Borromean systems and presenting preliminary studies on $^{10}$ Be and $^{11}$ Li.

Petr Navratil, Sofia Quaglioni, Guillaume Hupin, Michael Gennari, Kostas Kravvaris2026-04-06

⚛️ nuclear theory

Spin effects in superfluidity, neutron matter and neutron stars

This paper reviews the role of spin, magnetic fields, and nucleonic superfluidity in the interior physics of compact stars, utilizing a meta-modeling framework to connect microscopic interactions with macroscopic observables while addressing unresolved dynamics such as vortex lattices, pulsar glitches, and potential quark deconfinement.

Armen Sedrakian, Peter B. Rau2026-04-06

⚛️ nuclear theory

Revisiting the Rhoades-Ruffini bound

This paper revises the Rhoades-Ruffini bound by relaxing assumptions about the onset of stiff non-nucleonic matter, demonstrating that the theoretical maximum mass of neutron stars could reach $4~M_\odot$ or higher and providing a fit formula for this limit based on the speed of sound and transition density.

David Blaschke, Adrian Wojcik2026-04-06

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nucl-th

Disentangling Flow Contributions from the Chiral Magnetic Effect in U+U Collisions with Forward-Backward Multiplicity Asymmetry

Causality, the Kovtun-Son-Starinets bound, and a novel sum rule for spectral densities

Lattice studies of chimera baryons in Sp(4) gauge theory

Neural-network quantum states for solving few-body problems: application to Efimov physics

Dissipative spin hydrodynamics in Bjorken flow and thermal dilepton production

Neutron star with dark matter using vector portal

Rigid triaxiality has the SU(3) symmetry: 166^{166}166Er as an example

Halo Nuclei from Ab Initio Nuclear Theory

Spin effects in superfluidity, neutron matter and neutron stars

Revisiting the Rhoades-Ruffini bound

Rigid triaxiality has the SU(3) symmetry: $^{166}$ Er as an example