Results 1 to 10 of about 440 (138)

On the spin content of the classical massless Rarita-Schwinger system

SciPost Physics Proceedings, 2023
We analyze the Rarita-Schwinger massless theory in the Lagrangian and Hamiltonian approaches. At the Lagrangian level, the standard gamma-trace gauge fixing constraint leaves a 1/2 and a 3/2 propagating Poincaré group helicities. At the Hamiltonian level,
Mauricio Valenzuela, Jorge Zanelli
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About the geographic grid of the three-dimensional hypersphere [PDF]

E3S Web of Conferences, 2020
According to the Poincaré conjecture (1904) proved by Grigory Perelman (2002-2003) that any simply connected compact three- dimensional manifold without edges is homeomorphic to a three- dimensional hypersphere [1], to solve the problems of visualizing ...
Kim Pavel
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Is the horizon of an eternal black hole really smooth?

Journal of High Energy Physics, 2023
We point out that in many eternal black holes, including a Schwarzschild eternal black hole and an eternal black hole in AdS 5, instant folded strings are created in the past wedge and render the region just outside the horizon singular.
Nissan Itzhaki
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The Global Attractor of the Allen-Cahn Equation on the Sphere

Frontiers in Applied Mathematics and Statistics, 2020
In this paper we study the attractor of a parabolic semiflow generated by a singularly perturbed PDE with a non-linear term given by a bistable potential, in an oval surface; the Allen-Cahn equation being a prototypical example.
David Medina, Pablo Padilla
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Brane-jet instabilities

Journal of High Energy Physics, 2020
With one exception, all known non-supersymmetric AdS4 and AdS5 vacua of gauged maximal supergravities that descend from string and M theory have been shown to have modes with mass below the BF bound.
Iosif Bena, Krzysztof Pilch, Nicholas P. Warner   +2 more
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Moduli space holography and the finiteness of flux vacua

Journal of High Energy Physics, 2021
A holographic perspective to study and characterize field spaces that arise in string compactifications is suggested. A concrete correspondence is developed by studying two-dimensional moduli spaces in supersymmetric string compactifications.
Thomas W. Grimm
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Heegaard splittings and Morse-Smale flows

International Journal of Mathematics and Mathematical Sciences, 2003
We describe three theorems which summarize what survives in three dimensions of Smale's proof of the higher-dimensional Poincaré conjecture. The proofs require Smale's cancellation lemma and a lemma asserting the existence of a 2-gon. Such 2-gons are the
Ralf Gautschi, Joel W. Robbin, Dietmar A. Salamon   +2 more
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Geometry of massless scattering in integrable superstring

Journal of High Energy Physics, 2019
We consider the action of the q-deformed Poincaré superalgebra on the massless non-relativistic R-matrix in ordinary (undeformed) integrable AdS 2 × S 2 × T 6 type IIB superstring theory. The boost generator acts non-trivially on the R-matrix, confirming
A. Fontanella, A. Torrielli
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The boostless bootstrap: amplitudes without Lorentz boosts

Journal of High Energy Physics, 2020
Poincaré invariance is a well-tested symmetry of nature and sits at the core of our description of relativistic particles and gravity. At the same time, in most systems Poincaré invariance is not a symmetry of the ground state and is hence broken ...
Enrico Pajer, David Stefanyszyn, Jakub Supeł   +2 more
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Topology of 3-dimensional manifolds [PDF]

ریاضی و جامعه
This is the second paper from a trio which reviews some of the progress in low dimensional topology in the past century. Starting with the work of Poincare in the last years of 19th century and first few years of 20th century, we review the major steps ...
Eaman Eftekhary
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