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Nuclear and High Energy Physics

Nuclear and High Energy Physics

Fundamental particles and nuclear physics, including particle accelerators, quarks and leptons, nuclear structure, particle detectors, and the search for new physics
9 papers in this specialization

Paperzilla Papers in Nuclear and High Energy Physics

Measurement of charged hadron multiplicity in Au+Au collisions at √ SNN = 200 GeV with the sPHENIX detector

This paper presents measurements of charged hadron multiplicity in gold-gold collisions at high energy using the sPHENIX detector. The results, which count charged particles produced after the collision, agree with previous measurements from other detectors at the Relativistic Heavy Ion Collider (RHIC).
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paper_1126.pdf
Sep 05, 09:36 AM

Dark matter and dark energy in combinatorial quantum gravity

This theoretical paper suggests that both dark energy and dark matter are consequences of quantum gravity within a model where spacetime emerges from a discrete, random graph structure. Dark energy is attributed to ground-state curvature at finite coupling, and dark matter is explained as 'crystallographic' defects, analogous to allotropes in materials, in this spacetime fabric. The model predicts the existence of antigravity domains, arising from small areas of lower curvature, and identifies the Big Bang as a topological transition from randomness to spacetime.
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paper_251.pdf
Aug 16, 08:53 AM

Elliptic Genera of 2d N = (0,1) Gauge Theories

This paper derives a new formula for calculating elliptic genera in two-dimensional quantum field theories with minimal supersymmetry (N=(0,1)). The researchers apply this formula to a specific model, the Gukov-Pei-Putrov model, and analyze its various phases or possible states. The formula requires several technical assumptions which should be investigated further.
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paper_129.pdf
Aug 12, 06:23 PM

Exactly Solvable Floquet Dynamics for Conformal Field Theories in Dimensions Greater than Two

The paper investigates the dynamics of conformal field theories (CFTs) in 3+1 dimensions under periodic driving protocols involving different deformations of the CFT Hamiltonian. By employing conformal transformations and a quaternion formalism, the authors calculate quantities like fidelity, unequal-time correlators, and energy density, demonstrating the existence of heating and non-heating phases depending on the drive parameters. For protocols with a single SU(1,1) subalgebra of the conformal group involved, the Floquet Hamiltonian is derived, enabling the study of dynamical phase transitions.
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2311.13468v3.pdf
Jul 16, 12:19 PM

The anomalous magnetic moment of the muon in the Standard Model

The Standard Model calculation of the muon anomalous magnetic moment is a complex undertaking, involving contributions from QED, electroweak interactions, and hadronic effects. The current theoretical prediction differs from the experimental measurement by 3.7 standard deviations, suggesting the potential presence of new physics. However, the uncertainties associated with the hadronic contributions, particularly HVP and HLbL, are still significant and limit the ability to draw definitive conclusions.
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2006.04822.pdf
Jul 14, 06:50 AM

Magnetic control of tokamak plasmas through deep reinforcement learning

This paper demonstrates successful real-time control of plasma shape and position in a tokamak using deep reinforcement learning. The controller, trained in simulation and deployed directly on the TCV tokamak, successfully stabilized a variety of plasma configurations, including advanced shapes like snowflakes and even two independent plasmas (droplets). This approach simplifies control design compared to conventional methods and enables more flexible exploration of new plasma configurations.
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s41586-021-04301-9.pdf
Jul 14, 06:50 AM

Replica wormholes and the entropy of Hawking radiation

This paper demonstrates how non-perturbative effects from "replica wormholes" can resolve the late-time entropy discrepancy for Hawking radiation, leading to a unitary Page curve. By including these new saddle points in the gravitational path integral, the island rule for computing entropy emerges naturally, suggesting a new way to understand how information escapes black holes.
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JHEP05(2020)013.pdf
Jul 14, 06:50 AM

Entanglement wedge reconstruction and the information paradox

This paper uses entanglement wedge reconstruction in AdS/CFT to show how information escapes from black holes after the Page time. It derives both the Page curve for the entanglement entropy of an evaporating black hole and the Hayden-Preskill criterion for decoding information thrown into the black hole.
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JHEP09(2020)002.pdf
Jul 14, 06:50 AM

Electrochemically induced nuclear fusion of deuterium

The authors claim to have observed excess heat generation in palladium cathodes during electrolysis of heavy water, suggesting nuclear fusion. However, the measured neutron and tritium levels are far too low to explain the observed heat, and the study suffers from methodological limitations and safety concerns.
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Fleischmanelectroche.pdf
Jul 08, 11:54 AM
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