Results 91 to 100 of about 318,690 (204)

T‐Symmetry in String Geometry Theory

open access: yesAdvances in High Energy Physics, Volume 2025, Issue 1, 2025.
String geometry theory is one of the candidates of nonperturbative formulation of string theory. In this paper, we have shown that dimensionally reduced string geometry theories have what we call T‐symmetry. In the case of the dimensional reduction in space‐like directions, the T‐symmetry transformation gives the T‐dual transformation between the Type ...
Matsuo Sato   +2 more
wiley   +1 more source

Black Holes in Higher Dimensions

open access: yesLiving Reviews in Relativity, 2008
We review black-hole solutions of higher-dimensional vacuum gravity and higher-dimensional supergravity theories. The discussion of vacuum gravity is pedagogical, with detailed reviews of Myers–Perry solutions, black rings, and solution-generating ...
Reall Harvey S., Emparan Roberto
doaj  

Hawking and Unruh Effects of a 5-Dimensional Minimal Gauged Supergravity Black Hole by a Global Embedding Approach

open access: yesEntropy, 2013
Using the new global embedding approach we investigate Unruh/Hawking temperature of the 5-dimensional minimal gauged supergravity black hole with double rotating parameters in a general (1 + 1) space-time.
Li-Chun Zhang   +2 more
doaj   +1 more source

On Calabi‐Yau Manifolds at Strong Topological String Coupling

open access: yesFortschritte der Physik, Volume 72, Issue 12, December 2024.
Abstract It was recently shown that integrating out M2 states on Calabi‐Yau manifolds captures non‐perturbative topological string physics in the free energy. In this note, It has been shown that the resulting expression manifests a certain duality symmetry: the free energy at strong string coupling is equal to the Calabi‐Yau period at weak string ...
Jarod Hattab, Eran Palti
wiley   +1 more source

Spin-four N=7 $$ \mathcal{N}=7 $$ W-supergravity: S-fold and double copy construction

open access: yesJournal of High Energy Physics, 2018
In the present investigation we consider the possibility of having new massive, higher spin W-supergravity theories, which do not exist as four-dimensional perturbative models.
Sergio Ferrara, Dieter Lüst
doaj   +1 more source

The effective action of warped M-theory reductions with higher-derivative terms - Part II [PDF]

open access: yes, 2015
We study the three-dimensional effective action obtained by reducing eleven-dimensional supergravity with higher-derivative terms on a background solution including a warp-factor, an eight-dimensional compact manifold, and fluxes.
Grimm, Thomas W.   +2 more
core   +2 more sources

de Sitter State in Heterotic String Theory

open access: yesFortschritte der Physik, Volume 72, Issue 11, November 2024.
Abstract Recent no‐go theorems have ruled out four‐dimensional classical de Sitter vacua in heterotic string theory. On the other hand, the absence of a well‐defined Wilsonian effective action and other related phenomena also appear to rule out such time‐dependent vacua with de Sitter isometries, even in the presence of quantum corrections.
Stephon Alexander   +4 more
wiley   +1 more source

Gravitons and gauge fields in 5d Chern-Simons supergravity

open access: yes, 1999
Despite the nice geometrical properties of higher dimensional Chern-Simons (CS) supergravity theories these actions suffer from one major drawback, namely, their connection with the real world.
Achúcarro   +34 more
core   +1 more source

Recycling of iron and steel slag for carbon reduction and low‐environment load application

open access: yesCarbon Neutralization, Volume 3, Issue 4, Page 606-628, July 2024.
This article reviews the coupling of the research progress of blast furnace slag and steel slag in glass‐ceramics, ceramic products, mineral wool, and cementitious in recent years. The research status of CO2 fixation by iron and steel slag was discussed.
Ying Xu   +4 more
wiley   +1 more source

Stable de Sitter vacua in N=2, D=5 supergravity

open access: yes, 2005
We find 5D gauged supergravity theories exhibiting stable de Sitter vacua. These are the first examples of stable de Sitter vacua in higher-dimensional (D>4) supergravity.
Balasubramanian V   +30 more
core   +1 more source

Home - About - Disclaimer - Privacy