Results 31 to 40 of about 107,573 (184)
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley +1 more source
The BRST invariant Lagrangian of the gravitationally interacting U(1)$U(1)$ gauge theory, namely the Quantum GraviElectro Dynamics (QGED). The Yan–Mills theory with the Hilbert–Einstein gravitational Lagrangian, namely the Yang–Mills–Utiyama (YMU) theory, is defined and quantised using the standard procedure. The theory is perturbatively renormalisable,
Yoshimasa Kurihara
wiley +1 more source
Dynamical Dark Sector: A Joint Two‐Scalar‐Field Model for Dark Matter and Quintessence
The physical nature of dark matter and dark energy remains one of the most pressing questions in modern cosmology. This work presents a phenomenological model where the entire dark sector is described by two minimally coupled scalar fields within general relativity.
Silvio A. Corrêa Junior, Jianguo Yan
wiley +1 more source
Some Topics in Theoretical High-Energy Physics [PDF]
This thesis discusses various aspects of theoretical high-energy physics. The first two sections describe methods for investigating QCD effects in e⁺e⁻ annihilation to hadrons. The third section presents some predictions for various features of QCD jets.
Wolfram, Stephen
core +1 more source
Complementary Probes of the Dimension‐6 Operator via Gravitational Waves and Multi‐Higgs Production
We investigate the phenomenological consequences of a dimension‐6 operator H†H3/Λ2, Λ is the effective scale at which new physics takes over, which modifies the scalar potential of the standard model and can induce a strong first‐order electroweak phase transition (SFOEWPT). We estimate the lower limit on the effective scale Λ to be 515 GeV from the di‐
Dilruba Gazi +4 more
wiley +1 more source
Towards Skyrmion Stars: Large Baryon Number Configurations in the Einstein-Skyrme Model [PDF]
The large baryon number sector of the Einstein-Skyrme model has been investigated, as a possible model for baryon stars. Self-gravitating hedgehog skyrmions have been studied previously and the existence of stable sol і tonic stars excluded due to energy
Probert, Gavin Idris
core
Glueball–baryon interactions in holographic QCD
Studying the Witten–Sakai–Sugimoto model with type IIA string theory, we find the glueball–baryon interaction is predicted in this model. The glueball is identified as the 11D gravitational waves or graviton described by the M5-brane supergravity ...
Si-Wen Li
doaj +1 more source
Analytical Description of the Distributions of Primary and Secondary Cosmogenic Particles
In this work, we present an analytical description of the energy distributions of primary and secondary cosmogenic particles on Earth in terms of parameters having clear physical meaning. A modified power law is assumed for energy distributions, incorporating terms such as energy loss/decay, which are effective at low energies, and a source term, which
Shvetaank Tripathi +2 more
wiley +1 more source
Baryon asymmetry, dark matter and local baryon number [PDF]
We propose a new mechanism to understand the relation between baryon and dark matter asymmetries in the universe in theories where the baryon number is a local symmetry.
Fileviez Pérez, P. +3 more
core +1 more source
Topological Quasiparticles of Light: From Spin‐Orbit Coupling to Photonic Skyrmions
This review summarizes recent advances in photonic skyrmions, emphasizing the central role of spin–orbit coupling in their formation. The review discusses how spin–orbit interactions generate skyrmionic textures, examines modulation strategies for their dynamic control, and provides an overview of emerging directions and opportunities where these ...
Xinrui Lei, Qiwen Zhan
wiley +1 more source

