Results 91 to 100 of about 9,349 (162)

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

Superstrings, Gauge Fields and Black Holes [PDF]

, 2000
There has been spectacular progress in the development of string and superstring theories since its inception thirty years ago. Development in this area has never been impeded by the lack of experimental confirmation.
Baaquie, B. E., Kwek, L. C.
core   +3 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

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

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

dS vacua and the swampland

Journal of High Energy Physics, 2019
In this note we revisit some of the recent 10d and 4d arguments suggesting that the uplifting of supersymmetric AdS vacua leads to a flattening of the potential, preventing the formation of dS vacua.
Renata Kallosh, Andrei Linde, Evan McDonough, Marco Scalisi   +3 more
doaj   +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

Three Generations in Type I Compactifications [PDF]

, 1998
Generalizing the recent work on three-family Type I compactifications, we classify perturbative Type I vacua obtained via compactifying on the T^6/Z_2 X Z_2 X Z_3 orbifold with all possible Wilson lines. In particular, we concentrate on models with gauge
A. Dabholkar, A. Sagnotti, C. Angelantonj, C.G. Callan, C.G. Callan, D.C. Dunbar, E. Witten, E.G. Gimon, E.G. Gimon, G. Pradisi, G. Zwart, J. Dai, J. Lykken, J. Polchinski, J. Polchinski, J. Polchinski, M. Berkooz, M. Bianchi, M. Bianchi, N. Arkani-Hamed, N. Ishibashi, P. Hořava, P. Hořava, R.G. Leigh, S.-H. Henry Tye, S.M. Roy, S.M. Roy, Z. Bern, Z. Kakushadze, Z. Kakushadze, Z. Kakushadze, Z. Kakushadze, Zurab Kakushadze   +32 more
core   +3 more sources