Visible GeV ALP from TeV Vector‐Like Leptons
Fortschritte der Physik, Volume 73, Issue 3, March 2025.Abstract A model is presented where a GeV axion‐like‐particle (ALP) is predicted in a large portion of the parameter space due to the presence of explicit Peccei–Quinn (PQ) symmetry‐breaking terms in an exotic leptonic sector. The latter provides a solution to the muon g−2$g-2$ anomaly, within the framework of the Linear Seesaw neutrino mechanism.
Arturo de Giorgi +2 more
wiley +1 more source
Consequences of f(R)-theories of gravity on gravitational leptogenesis
, 2012 f(R)-theories of gravity are reviewed in the framework of the matter-antimatter asymmetry in the Universe. The asymmetry is generated by the gravitational coupling of heavy (Majorana) neutrinos with the Ricci scalar curvature. In order that the mechanism
Lambiase, G., Mohanty, S., Pizza, L.
core +1 more source
String Theory: A Framework for Quantum Gravity and Various Applications [PDF]
, 2008 In this semi-technical review we discuss string theory (and all that goes by that name) as a framework for a quantum theory of gravity. This is a new paradigm in theoretical physics that goes beyond relativistic quantum field theory.
Wadia, Spenta R.
core +1 more source
Moduli Stabilization in String Gas Cosmology
, 2005 String gas cosmology is an approach towards studying the effects of superstring theory on early universe cosmology which is based on new symmetries and new degrees of freedom of string theory.
Brandenberger, Robert H.
core +1 more source
$f(R)$ gravity theories in the Palatini Formalism constrained from strong lensing
, 2009 $f(R)$ gravity, capable of driving the late-time acceleration of the universe, is emerging as a promising alternative to dark energy. Various $f(R)$ gravity models have been intensively tested against probes of the expansion history, including type Ia ...
Amarzguioui +92 more
core +3 more sources
WIMPless Dark Matter from Non-Abelian Hidden Sectors with Anomaly-Mediated Supersymmetry Breaking
, 2011 In anomaly-mediated supersymmetry breaking (AMSB) models, superpartner masses are proportional to couplings squared. Their hidden sectors therefore naturally contain WIMPless dark matter, particles whose thermal relic abundance is guaranteed to be of the
Feng, Jonathan L., Shadmi, Yael
core +1 more source
Detection of early-universe gravitational-wave signatures and fundamental physics. [PDF]
Gen Relativ Gravit, 2022 Caldwell R +37 more
europepmc +1 more source
The hierarchy problem and the cosmological constant problem in the Standard Model
, 2015 We argue that the SM in the Higgs phase does not suffer form a "hierarchy problem" and that similarly the "cosmological constant problem" resolves itself if we understand the SM as a low energy effective theory emerging from a cut-off medium at the ...
Jegerlehner, Fred
core
Neutrino communication, intergalactic transit, and Astrobiology. [PDF]
Bioinformation, 2022 Shapshak P.
europepmc +1 more source
Gravitational Equivalence Theorem and Double-Copy for Kaluza-Klein Graviton Scattering Amplitudes. [PDF]
Research (Wash D C), 2022 Hang YF, He HJ.
europepmc +1 more source