Results 131 to 140 of about 7,281 (260)
Weak gravity conjecture, black hole entropy, and modular invariance
In recent literature, it has been argued that a mild form of the Weak Gravity Conjecture (WGC) is satisfied by wide classes of effective field theories in which higher-derivative corrections can be shown to shift the charge-to-mass ratios of extremal ...
Lars Aalsma, Alex Cole, Gary Shiu
doaj +1 more source
Background Instability of Quintessence Model in Light of Entropy and Distance Conjecture
ABSTRACT We apply the covariant entropy bound argument supporting the de Sitter swampland conjecture to the quintessence model, to find out the condition for the background to be unstable. More concretely, the background is unstable when the matter entropy given by the species number of the effective field theory increases more rapidly than the ...
Min‐Seok Seo
wiley +1 more source
Large N limit of extremal non-supersymmetric black holes
The large N limit of extremal non-supersymmetric Type-I five-dimensional string black holes is studied from the point of view of D-branes. We find that the agreement between the D-brane and the black hole picture is due to an asymptotic restoration of ...
Manes, J.L. +4 more
core +1 more source
Building the blocks of Schwarzschild
We demonstrate that the Schwarzschild black hole can be “resolved” into bound states of Reissner-Nordström black holes in four dimensions. These bound states closely resemble the Schwarzschild geometry from the asymptotic region up to an infinitesimal ...
Raphaël Dulac, Pierre Heidmann
doaj +1 more source
Exploring Potential Mechanisms for the Initiation of Solifluction Patterns
Abstract Hillslopes in arctic regions commonly display large‐scale features—known as solifluction patterns—that form due to the exceedingly slow downhill movement of frost‐heaved soil. Here we use a combination of remote sensing data, linear stability analysis, numerical modeling, and review of a wide range of literature to evaluate several working ...
Rachel C. Glade +4 more
wiley +1 more source
Gauge theory, holography & black holes: Perspectives from string theory [PDF]
This thesis is based on research performed in the context of string- and M-theory. It can be divided into two main parts: the first concerns a very effective organizing principle, also known as the worldvolume theory of multiple M5 branes, for the study ...
van Leuven, S.P.G.
core
Fire‐survival strategies of first‐year acacia seedlings
Acacia seedlings (11 of 12 species) acquire some ability to survive grass fires in their first year, either by resisting topkill with thickened stems and/or by regrowing from below‐ground stems. The results suggest that small differences in these fire‐survival strategies at this crucial life stage translate to large differences in savanna physiognomy ...
Arjun B. Potter +5 more
wiley +1 more source
Black hole thermodynamics from string theory [PDF]
In this note we consider a stringy description of black hole horizon. We start with a nonlinear sigma model defined on a two dimensional Euclidean surface with background Rindler metric. By solving the field equations, we show that to the leading order the Bekenstein-Hawking formula of black hole entropy can be produced.
openaire +2 more sources
String/Gauge Duality and Penrose Limit [PDF]
Berenstein, Maldacena, and Nastase have recently discovered a particular limit of AdS/CFT correspondence where string theory in a plane wave background is dual to a sector of $mathcal N =4 SYM in a double scaling limit.
Park, Jongwon
core +1 more source
Are there topological black-hole solitons in string theory? [PDF]
12 pages, TeX, requires phyzzx.tex, published in Gen. Rel. Grav.
openaire +2 more sources

