Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Demulder, Saskia"'
Krylov complexity has recently been proposed as a quantum probe of chaos. The Krylov exponent characterising the exponential growth of Krylov complexity is conjectured to upper-bound the Lyapunov exponent. We compute the Krylov and the Lyapunov expon
Externí odkaz:
http://arxiv.org/abs/2407.09604
Autor:
Demulder, Saskia, Driezen, Sibylle, Knighton, Bob, Oling, Gerben, Retore, Ana L., Seibold, Fiona K., Sfondrini, Alessandro, Yan, Ziqi
We review different exact approaches to string theory. In the context of the Green-Schwarz superstring, we discuss the action in curved backgrounds and its supercoset formulation, with particular attention to superstring backgrounds of the $AdS_3$ ty
Externí odkaz:
http://arxiv.org/abs/2312.12930
The distance conjecture diagnoses viable low-energy effective realisation of consistent theories of quantum gravity by examining their breakdown at infinite distance in their parameter space. At the same time, infinite distance points in parameter sp
Externí odkaz:
http://arxiv.org/abs/2312.07674
Autor:
Demulder, Saskia, Raml, Thomas
Topological defects have long been known to encode symmetries and dualities between physical systems. In the context of string theory, defects have been intensively studied at the level of the worldsheet. Although marked by a number of pioneering mil
Externí odkaz:
http://arxiv.org/abs/2208.04662
We consider the setup of an evaporating black hole in AdS$_{4}$ coupled to an external bath, embedded in type IIB string theory. We study quantum extremal islands in these backgrounds, in relation to the existence of a massive graviton. Using explici
Externí odkaz:
http://arxiv.org/abs/2204.03669
Autor:
Demulder, Saskia, Raml, Thomas
We explore two distinct methods to introduce integrable defects in a family of integrable sigma-models known as Yang-Baxter models. The first method invokes a modified monodromy matrix encoding an integrable defect separating two integrable systems.
Externí odkaz:
http://arxiv.org/abs/2112.13606
Publikováno v:
J. High Energ. Phys. 2020, 86 (2020)
We build on the results of arXiv:1912.11036 for generalised frame fields on generalised quotient spaces and study integrable deformations for $\mathbb{CP}^n$. In particular we show how, when the target space of the Principal Chiral Model is a complex
Externí odkaz:
http://arxiv.org/abs/2002.11144
Recent work has shown that two-dimensional non-linear $\sigma$-models on group manifolds with Poisson-Lie symmetry can be understood within generalised geometry as exemplars of generalised parallelisable spaces. Here we extend this idea to target spa
Externí odkaz:
http://arxiv.org/abs/1912.11036
Poisson-Lie (PL) T-duality has received much attention over the last five years in connection with integrable string worldsheet theories. At the level of the worldsheet, the algebraic structure underpinning these connections is made manifest with the
Externí odkaz:
http://arxiv.org/abs/1904.09992
Autor:
Demulder, Saskia
In this short proceedings we discuss some of the results obtained in [1]. Integrable deformations enlarge the landscape and understanding of integrable models and its algebraic structures like quantum groups. In this short proceedings, we will review
Externí odkaz:
http://arxiv.org/abs/1904.07665