Results 51 to 60 of about 46,892 (166)

Geometric Landau analysis and symbol bootstrap

Journal of High Energy Physics
We investigate how the positive geometry framework for loop integrands in N = 4 $$ \mathcal{N}=4 $$ super Yang-Mills theory constrains the structure of the integrated answers.
Dmitry Chicherin, Johannes Henn, Elia Mazzucchelli, Jaroslav Trnka, Qinglin Yang, Shun-Qing Zhang   +5 more
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Chern classes of integral submanifolds of some contact manifolds

International Journal of Mathematics and Mathematical Sciences, 2002
A complex subbundle of the normal bundle to an integral submanifold of the contact distribution in a Sasakian manifold is given. The geometry of this bundle is investigated and some results concerning its Chern classes are obtained.
Gheorghe Pitiş
doaj   +1 more source

Differential Equations and Integral Geometry

Advances in Mathematics, 1997
Let \(X\) be a smooth manifold of dimension \(n\), and \({\mathcal M}\) a system of linear partial differential equations on \(X\). Denote by \(\text{Sol} ({\mathcal M},C^\infty(X))\) the space of smooth solutions of \({\mathcal M}\). Let \({\mathcal N}\) be a linear system of PDE on a manifold \(Y\), \(K(x,y) dy\) be an \((n,0)\)-form on \(X\times Y\)
openaire   +1 more source

Revisiting localization for BPS black hole entropy

Journal of High Energy Physics
Macroscopic computation of the degeneracy / index of a BPS black hole requires carrying out string theory path integral over the near horizon geometry of the black hole.
Ashoke Sen
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Notes on Transformations in Integrable Geometry [PDF]

, 2017
We describe the gauge-theoretic approach to transformations in integrable geometry through discussion of two classical examples: surfaces of constant negative Gauss curvature and isothermic surfaces. These are purely expository notes written to accompany some lectures I gave in Fukuoka in May 2015.
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Pseudo-Derivative and Pseudo-Integral of Fractional Order

Journal of Mathematical Extension, 2014
Integral and differential of fractional order are important notion that is often used in dealing with Frechet geometry. Based on pseudo-operations given by monotone and continuous function g, we study pseudo-derivative and pseudo-integral of ...
A. Zohri∗, Sh. Jamshidzadeh
doaj  

Integral geometry

, 1967
A partir de tres exemples simples es mostren les idees bàsiques sobre les quals s'ha desenvolupat la geometria ...
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Logarithmic corrections for near-extremal black holes

Journal of High Energy Physics
We present the computation of logarithmic corrections to near-extremal black hole entropy from one-loop Euclidean gravity path integral around the near-horizon geometry. We extract these corrections employing a suitably modified heat kernel method, where
Nabamita Banerjee, Muktajyoti Saha, Suthanth Srinivasan   +2 more
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Hollow-grams: generalized entanglement wedges from the gravitational path integral

Journal of High Energy Physics
Recently, Bousso and Penington (BP) made a proposal for the entanglement wedge associated to a gravitating bulk region. In this paper, we derive this proposal in time-reflection symmetric settings using the gravitational path integral.
Sami Kaya, Pratik Rath, Kyle Ritchie
doaj   +1 more source

Resonance Calculation Based on Equivalent Geometry Method for Complex Geometry Fuel

Yuanzineng kexue jishu, 2022
There are various geometric fuels in reactors, including cylindrical fuel such as SPERT test reactor, plate fuel such as JRR3 research reactor, annular fuel such as Xi’an Pulse Reactor, and other geometric fuel such as advanced test reactor, etc.
CAO Lu;LIU Zhouyu;HE Qingming;CAO Liangzhi
doaj