Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Kudrna, Matěj"'
Autor:
Kudrna, Matěj
We analyze boundary states in the SU(2)$_k$ WZW model using open string field theory in the level truncation approximation. We develop algorithms that allow effective calculation of action in this model and we search for classical solutions of the eq
Externí odkaz:
http://arxiv.org/abs/2112.12213
Autor:
Kudrna, Matěj
Given a D-brane background in string theory (or equivalently boundary conditions in a two dimensional conformal field theory), classical solutions of open string field theory equations of motion are conjectured to describe new D-brane backgrounds (bo
Externí odkaz:
http://www.nusl.cz/ntk/nusl-404481
Autor:
Kudrna, Matěj
Given a D-brane background in string theory (or equivalently boundary conditions in a two-dimensional conformal field theory), classical solutions of open string field theory equations of motion are conjectured to describe new D-brane backgrounds (bo
Externí odkaz:
http://arxiv.org/abs/2101.07678
Publikováno v:
JHEP 05 (2020) 029
We compute the Hermitian sector of the relative BRST cohomology of the spacelike and timelike Liouville theories with generic real central charge $c_L$ in each case, coupled to a spacelike Coulomb gas and a generic transverse CFT. This paper is a com
Externí odkaz:
http://arxiv.org/abs/2002.01722
Autor:
Arroyo, E. Aldo, Kudrna, Matěj
Publikováno v:
JHEP02(2020)065
Based on the level truncation scheme, we develop a new numerical method to evaluate the tachyon vacuum solution in the Schnabl gauge up to level $L=24$. We confirm the prediction that the energy associated to this numerical solution has a local minim
Externí odkaz:
http://arxiv.org/abs/1908.05330
Akademický článek
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Autor:
Kudrna, Matej, Schnabl, Martin
An outstanding problem in open bosonic string field theory is the existence of nontrivial classical solutions in its universal sector. Such solutions independent of the underlying CFT would be relevant for any background, but aside of the celebrated
Externí odkaz:
http://arxiv.org/abs/1812.03221
Autor:
Kudrna, Matej, Maccaferri, Carlo
We propose a new non-perturbative method to search for marginal deformations in level truncated open string field theory. Instead of studying the flatness of the effective potential for the marginal field (which is not expected to give a one-to-one p
Externí odkaz:
http://arxiv.org/abs/1601.04046
Autor:
Kudrna, Matěj
Recently it was shown by M. Guica, T. Hartman, W. Song and A. Strominger that the entropy of extreme Kerr black hole can be computed through a duality between the quantum gravity on the background of the Kerr black hole and the conformal field theory
Externí odkaz:
http://www.nusl.cz/ntk/nusl-297829
Given a consistent choice of conformally invariant boundary conditions in a two dimensional conformal field theory, one can construct new consistent boundary conditions by deforming with a relevant boundary operator and flowing to the infrared, or by
Externí odkaz:
http://arxiv.org/abs/1401.7980