Results 71 to 80 of about 657 (140)

Inflation with a graceful exit in a random landscape

Journal of High Energy Physics, 2017
We develop a stochastic description of small-field inflationary histories with a graceful exit in a random potential whose Hessian is a Gaussian random matrix as a model of the unstructured part of the string landscape.
F. G. Pedro, A. Westphal
doaj   +1 more source

On (scalar QED) gravitational positivity bounds

Journal of High Energy Physics, 2023
We study positivity bounds in the presence of gravity. We first review the gravitational positivity bound at the tree-level, where it is known that a certain amount of negativity is allowed for the coefficients of higher-derivative operators. The size of
Yuta Hamada, Rinto Kuramochi, Gregory J. Loges, Sota Nakajima   +3 more
doaj   +1 more source

AdS₄flux vacua in type II superstrings and their domain-wall solutions

Journal of High Energy Physics, 2007
Acknowledgment ...
Kounnas, C., Lust, D., Petropoulos, P. M., Tsimpis, D.   +3 more
openaire   +4 more sources

Gravitoelectric effect in the condensed magnetic sea

IET Quantum Communication, Volume 5, Issue 2, Page 185-195, June 2024.
The Soon Joe generator produced a certain amount of electricity in the dark stationary state. Gravity or gravitational wave can induce the magnetic seas because gravitons captured in the magnetic seas should induce the gravitoelectric effect without the photoelectric effects. As a result, we formulated a new law for magnetism on Earth. Abstract Trapped
Jong hoon Lee
wiley   +1 more source

Tadpole conjecture in non-geometric backgrounds

Journal of High Energy Physics
Calabi-Yau compactifications have typically a large number of complex structure and/or Kähler moduli that have to be stabilised in phenomenologically-relevant vacua. The former can in principle be done by fluxes in type IIB solutions.
Katrin Becker, Nathan Brady, Mariana Graña, Miguel Morros, Anindya Sengupta, Qi You   +5 more
doaj   +1 more source

Octonionic Magical Supergravity, Niemeier Lattices, and Exceptional & Hilbert Modular Forms

Fortschritte der Physik, Volume 72, Issue 2, February 2024.
Abstract The quantum degeneracies of Bogomolny‐Prasad‐Sommerfield (BPS) black holes of octonionic magical supergravity in five dimensions are studied. Quantum degeneracy is defined purely number theoretically as the number of distinct states in charge space with a given set of invariant labels.
Murat Günaydin, Abhiram Kidambi
wiley   +1 more source

The Kreuzer-Skarke axiverse

Journal of High Energy Physics, 2020
We study the topological properties of Calabi-Yau threefold hypersurfaces at large h 1,1. We obtain two million threefolds X by triangulating polytopes from the Kreuzer-Skarke list, including all polytopes with 240 ≤ h 1,1 ≤ 491.
Mehmet Demirtas, Cody Long, Liam McAllister, Mike Stillman   +3 more
doaj   +1 more source

Mass spectrum of type IIB flux compactifications — comments on AdS vacua and conformal dimensions

Journal of High Energy Physics, 2023
In this note we study the mass spectrum of type IIB flux compactifications. We first give a general discussion of the mass matrix for F-term vacua in four-dimensional N $$ \mathcal{N} $$ = 1 supergravity theories and then specialize to type IIB Calabi ...
Erik Plauschinn
doaj   +1 more source

Critical superstring vacua from noncritical manifolds: A novel framework for string compactification and mirror symmetry [PDF]

Physical Review Letters, 1993
A new framework is found for the compactification of supersymmetric string theory. It is shown that the massless spectra of critical string vacua with central charge c=3${\mathit{D}}_{\mathrm{crit}}$ can be derived from manifolds of complex dimension ${\mathit{D}}_{\mathrm{crit}}$+2(Q-1),Q\ensuremath{\ge}1, whose first Chern class is quantized in a ...
openaire   +3 more sources

A note on O6 intersections in AdS flux vacua

Journal of High Energy Physics
The DGKT-CFI construction of AdS flux vacua in type IIA string theory has interesting features such as classical moduli stabilization and a parametric scale separation between the Hubble scale and the Kaluza-Klein scale.
Daniel Junghans
doaj   +1 more source