Results 81 to 90 of about 683 (126)

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

Branes with brains: exploring string vacua with deep reinforcement learning

Journal of High Energy Physics, 2019
We propose deep reinforcement learning as a model-free method for exploring the landscape of string vacua. As a concrete application, we utilize an artificial intelligence agent known as an asynchronous advantage actor-critic to explore type IIA ...
James Halverson, Brent Nelson, Fabian Ruehle   +2 more
doaj   +1 more source

Anomalous U(1)s in Type I superstring vacua

, 2002
We perform a systematic string computation of the masses of anomalous U(1) gauge bosons in four-dimensional orientifold vacua, and we study their localization properties in the internal (compactified) space. We find that N=1 supersymmetric sectors yield four-dimensional contributions, localized in the whole six-dimensional internal space, while N=2 ...
Antoniadis, I., Kiritsis, E., Rizos, J.
openaire   +2 more sources

Geometrical Construction of Type I Superstring Vacua

, 1997
12 pages, latex, no figures; contribution to the Proceedings of the 12th Italian Conference on General Relativity and Gravitational Physics, Rome, september 23-27 ...
openaire   +2 more sources

The gravitational sector of 2d (0, 2) F-theory vacua

Journal of High Energy Physics, 2017
F-theory compactifications on Calabi-Yau fivefolds give rise to two-dimensional N = (0, 2) supersymmetric field theories coupled to gravity. We explore the dilaton supergravity defined by the moduli sector of such compactifications.
Craig Lawrie, Sakura Schäfer-Nameki, Timo Weigand   +2 more
doaj   +1 more source

De Sitter vacua in no-scale supergravity

Journal of High Energy Physics, 2018
No-scale supergravity is the appropriate general framework for low-energy effective field theories derived from string theory. The simplest no-scale Kähler potential with a single chiral field corresponds to a compactification to flat Minkowski space ...
John Ellis, Balakrishnan Nagaraj, Dimitri V. Nanopoulos, Keith A. Olive   +3 more
doaj   +1 more source

100 years of mathematical cosmology: Models, theories and problems, Part B. [PDF]

Philos Trans A Math Phys Eng Sci, 2022
Cotsakis S, Yefremov AP.
europepmc   +1 more source

Conflicts with de Sitter Vacua in Superstring Theory

McGill Science Undergraduate Research Journal
Models of our universe lack consistency at different energy scales, so we require a theory with ultraviolet (UV) completion such as string theory. A suitable candidate to model our universe in this framework is de Sitter space, a spacetime which expands and has positive curvature.
openaire   +1 more source

A universal tachyon in nearly no-scale de Sitter compactifications

Journal of High Energy Physics, 2018
We investigate de Sitter solutions of N=1 $$ \mathcal{N}=1 $$ supergravity with an F-term scalar potential near a no-scale Minkowski point, as they may in particular arise from flux compactifications in string theory.
Daniel Junghans, Marco Zagermann
doaj   +1 more source

Detection of early-universe gravitational-wave signatures and fundamental physics. [PDF]

Gen Relativ Gravit, 2022
Caldwell R, Cui Y, Guo HK, Mandic V, Mariotti A, No JM, Ramsey-Musolf MJ, Sakellariadou M, Sinha K, Wang LT, White G, Zhao Y, An H, Bian L, Caprini C, Clesse S, Cline JM, Cusin G, Fornal B, Jinno R, Laurent B, Levi N, Lyu KF, Martinez M, Miller AL, Redigolo D, Scarlata C, Sevrin A, Haghi BSE, Shu J, Siemens X, Steer DA, Sundrum R, Tamarit C, Weir DJ, Xie KP, Yang FW, Zhou S.   +37 more
europepmc   +1 more source