Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Itsios, Georgios"'
We construct a generalisation of the $\lambda$-deformation of the Principal Chiral Model (PCM) where we deform just a subgroup $F$ of the full symmetry group $G$. We find that demanding Lax integrability imposes a crucial restriction, namely that the
Externí odkaz:
http://arxiv.org/abs/2407.20323
Autor:
Itsios, Georgios
Publikováno v:
JHEP 01 (2024) 177
We construct the embedding of the $\lambda$-model on $SL(2, \mathbb{R}) \times SU(2) \times SU(2)$ in type-II supergravity. In the absence of deformation, the ten-dimensional background corresponds to the near-horizon limit of the NS1-NS5-NS5 brane i
Externí odkaz:
http://arxiv.org/abs/2310.19887
Publikováno v:
JHEP 01 (2024) 084
We provide the first supersymmetric embedding of an integrable $\lambda$-deformation to type-II supergravity. Specifically, that of the near horizon of the NS1-NS5 brane intersection, geometrically corresponding to $AdS_3 \times S^3 \times T^4$. We s
Externí odkaz:
http://arxiv.org/abs/2310.17700
We construct and thoroughly study a new integrable example of the AdS/CFT correspondence with Schr\"{o}dinger symmetry. On the gravity side, the supergravity solution depends on two parameters and is obtained by marginally deforming the internal spac
Externí odkaz:
http://arxiv.org/abs/2207.06092
Publikováno v:
Nucl.Phys.B 973 (2021) 115594
Kerr-Schild perturbations in General Relativity provide a fruitful way of constructing new exact solutions starting from known ones, elucidating also the structure of the spacetimes. We initiate such a study in the context of string theory and superg
Externí odkaz:
http://arxiv.org/abs/2109.05040
Publikováno v:
Nucl.Phys.B 971 (2021) 115515
A novel class of integrable $\sigma$-models interpolating between exact coset conformal field theories in the IR and hyperbolic spaces in the UV is constructed. We demonstrate the relation to the asymptotic limit of $\lambda$-deformed models for cose
Externí odkaz:
http://arxiv.org/abs/2106.00032
We investigate the stability of the non-supersymmetric solutions of type-IIB supergravity having an unwarped $AdS$ factor and $\lambda$-deformed subspaces found in arXiv:1911.12371. Among the plethora of solutions we study the perturbative stability
Externí odkaz:
http://arxiv.org/abs/2103.12761
We elevate $\lambda$-deformed $\sigma$-models into full type-II supergravity backgrounds. We construct several solutions which contain undeformed $AdS_n$ spaces, with $n=2,3,4$ and $6$, as an integrable part. In that respect, our examples are the fir
Externí odkaz:
http://arxiv.org/abs/1911.12371
In this paper we study spin-2 excitations for a class of $\mathcal{N} = 2$ supersymmetric solutions of type-IIA supergravity found by Gaiotto and Maldacena. The mass spectrum of these excitations can be derived by solving a second order partial diffe
Externí odkaz:
http://arxiv.org/abs/1903.11613
In this work we will study the low-energy collective behavior of spatially anisotropic dense fluids in four spacetime dimensions. We will embed a massless flavor D7-brane probe in a generic geometry which has a metric possessing anisotropy in the spa
Externí odkaz:
http://arxiv.org/abs/1808.07035