3619 papers
Hep-Th, or high-energy theoretical physics, explores the fundamental building blocks of our universe and the forces that govern them. Researchers in this field use complex mathematics to understand everything from subatomic particles to the behavior of black holes, often pushing the boundaries of what we know about space and time.
At Gist.Science, we monitor the arXiv repository to ensure you stay ahead of the curve in this rapidly evolving discipline. For every new preprint uploaded to arXiv under this category, our team generates both accessible plain-language overviews and detailed technical summaries, making cutting-edge research understandable regardless of your background.
Below are the latest papers in high-energy theoretical physics, curated to help you navigate the most significant recent discoveries.
This paper proposes that interactions between gravitons and inflatons during the inflationary period, combined with horizon-induced "which-path" information, generate entangled graviton states that produce a measurable quantum signature in the scalar four-point correlation function, potentially observable through high-order galaxy correlations like halo bias and intrinsic alignment.
This paper proposes a method to test the quantum origin of primordial fluctuations by constructing a Bell inequality from the eight-point correlation function of scalar curvature perturbations, which encodes polarization entanglement from pairs of gravitons generated during inflation.
This paper presents a universal worldline framework for efficiently computing the N-th rank QED polarization tensor by expressing it through a reduced set of "head" form factors whose number scales exponentially rather than factorially, thereby bypassing traditional tensor reductions and explicitly reproducing known on-shell results while extending them to the fully off-shell case.
This paper demonstrates that relational observables in quantum gravity can be expressed as dressed operators, revealing that the algebraic structure of quasi-de Sitter space corresponds to a Type II von Neumann algebra due to isometry breaking, which fundamentally distinguishes it from the Type II algebra of de Sitter space.
This paper formulates the Gao-Jafferis-Wall traversable wormhole protocol as a quantum channel, demonstrating that its capacity is determined by the time derivative of out-of-time-ordered correlators (reflecting operator size growth) and is bounded by Einstein gravity limits, thereby establishing a benchmark for quantum simulations.
This paper analytically sums leading bubble diagrams for kink-meson scattering in the double-well model, revealing a Breit-Wigner resonance peak corresponding to a doubly excited kink shape mode whose decay rate matches previous findings by Manton and Merabet.
This paper establishes that any non-quantized model of gravity consistent with Galilean invariance and Newtonian averages must introduce a quantifiable minimum level of noise, implying that observing gravity below this noise threshold would experimentally prove its ability to entangle massive objects and thus its quantization.
This paper develops a nonperturbative tensor-network framework using Matrix Product States to compute cosmological correlators in de Sitter space, providing controlled evidence that in-in correlators can be derived from a gluing-based in-out formalism while revealing that the latter induces significantly larger entanglement growth, making the former numerically more favorable.
This paper employs the Schwinger-Keldysh influence functional formalism to demonstrate that the decoherence rate of an accelerated Unruh-DeWitt detector coupled to various quantum fields scales as , revealing that higher scaling dimensions of environmental field operators significantly enhance decoherence and offer a more sensitive probe for the Unruh effect.
This paper demonstrates that incorporating full next-to-leading order (NLO) virtual and thermal corrections to relativistic scattering processes in the early Universe significantly alters dark matter freeze-in abundance predictions by approximately 30%, revealing that relying solely on thermal mass corrections can lead to substantial overestimations of rate reductions.