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Klarman fellow blends physics and math to explore string theory（图）
克拉曼 物理 数学 弦理论
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2023/5/22
What does a six-dimensional figure look like? Theoretical physicist Richard Nally can’t show you exactly, but he does have a sculpture – a pink shape the size of a grapefruit – that can help you imagi...
Very effective string model?
String pattern the parameter space the triple charged black hole membrane dynamic model low energy absorption coefficient of time and space
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2014/12/22
Additional evidence is presented for a recently proposed effective string model, conjectured to hold throughout the parameter space of the basic 5 dimensional, triply charged black holes, which includ...
On the boundedness of effective potentials arising from string compactifications
the boundedness of effective potentials string compactifications Mathematical Physics
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2012/6/30
We study effective potentials coming from compactifications of string theory. We show that, under mild assumptions, such potentials are bounded from below in four dimensions, giving an affirmative ans...
Integral Equation for CFT/String Duality
Integral Equation CFT/String Duality High Energy Physics - Theory
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2011/10/8
Abstract: We reinterpret and extend some old work on CFT/string duality. We consider some asymptotically conformal field theory in large N limit, with conformal symmetry broken by VEV's of infinite nu...
The Resurgence of Instantons in String Theory
Instantons Resurgent Analysis Topological and Minimal Strings Matrix Models
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2011/7/29
Abstract: Nonperturbative effects in string theory are usually associated to D-branes. In many cases it can be explicitly shown that D-brane instantons control the large-order behavior of string pertu...
D1-brane in Constant R-R 3-form Flux and Nambu Dynamics in String Theory
D1-brane Constant R-R 3-form Flux Nambu Dynamics String Theory
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2010/12/23
We consider D1-string in a constant R-R 3-form flux background and analyze its low energy limit. The leading order low energy theory has reparametrization symmetry and is a generalization of an earli...
String effects in Yang-Mills theory
String effects Yang-Mills theory
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2010/12/24
We study some features of the confining string connecting a quark-anti-quark pair in Yang-Mills theory. Monte Carlo investigations of the flux tube between two static quarks in the fundamental represe...
String Theory and The Velo-Zwanziger Problem
String Theory The Velo-Zwanziger Problem
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2010/12/24
We examine the behavior of the leading Regge trajectory of the open bosonic string in a uniform electromagnetic background and present a consistent set of Fierz-Pauli conditions for these symmetric t...
Non-perturbative String Theory from Water Waves
Non-perturbative String Theory Water Waves
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2010/12/24
We use a combination of a 't Hooft limit and numerical methods to find non-perturbative solutions of exactly solvable string theories, showing that perturbative solutions in different asymptotic regim...
On classical string solutions in AdS_5 x S^5
classical string solutions AdS_5 x S^5
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2010/12/24
We discuss some new simple closed bosonic string solutions in AdS_5 x S^5 that may be of interest in the context of AdS/CFT duality. In the first part of this work we consider solutions with two spins...
Axions as Quintessence in String Theory
Axions String Theory
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2010/12/24
We construct a model of quintessence in string theory based on the idea of axion monodromy as discussed by McAllister, Silverstein and Westphal arXiv:0808.0706. In the model, the quintessence field is...
Gauge Mediated Supersymmetry Breaking and String Theory
Gauge Mediated Supersymmetry Breaking String Theory
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2010/12/24
We discuss the possibility of finding scenarios within type IIB string theory compactified on Calabi-Yau orientifolds with fluxes, for realizing gauge mediated supersymmetry breaking. We find that whi...
The Cosmological Constant Problem from the Point of View of String Theory
The Cosmological Constant Problem View String Theory
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2010/12/24
The quantum field theory prediction of the cosmological constant is 120 orders of magnitude higher than the observed value. This is known as the cosmological constant problem. Here, we deal with the ...
Fundamental String (Membrane) Orbiting D5(M5)-branes
Fundamental String Orbiting D5(M5)-branes
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2010/12/23
We study fundamental string (F-string) dynamics near D5-brane in some limits. We find that when the angular momentum of the probe is proportional to string length (l_s) and square root of string coupl...
Renormalized waves and thermalization of the Klein-Gordon equation: What sound does a nonlinear string make?
Renormalized waves thermalization Klein-Gordon equation
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2010/11/10
We study the thermalization of the classical Klein-Gordon equation under a u^4 interaction. We numerically show that even in the presence of strong nonlinearities, the local thermodynamic equilibrium ...