166 citations · 671 across the 34 of their papers we have counts for
33 papers · 1 filter
On Non Invertible Symmetries in Type IIB Supergravity
Jose J. Fernandez-Melgarejo, Giacomo Giorgi, Diego Marques +1
In this work, we uncover a collection of non invertible topological operators linked to the 0-, 2-, 4- and 6-form symmetries related to the type IIB superstring effective theory. B…
Democratic actions with scalar fields: symmetric sigma models, supergravity actions and the effective theory of the type IIB superstring
Jose Juan Fernandez-Melgarejo, Giacomo Giorgi, Carmen Gomez-Fayren +2
The dualization of the scalar fields of a theory into (d-2)-form potentials preserving all the global symmetries is one of the main problems in the construction of democratic pseud…
Open Strings in IIB Orientifold Reductions
Juan R. Balaguer, Giuseppe Dibitetto, Jose J. Fernandez-Melgarejo +1
We consider type IIB compactifications on a general 4D group manifold with different types of possible spacetime filling O-planes and the corresponding D-branes parallel to them. O…
The Large Limit of icMERA and Holography
Jose J. Fernandez-Melgarejo, Javier Molina-Vilaplana
In this work, we compute the entanglement entropy in continuous icMERA tensor networks for large models at strong coupling. Our results show that the quantum corrections…
New IIB intersecting brane solutions yielding supersymmetric AdS vacua
Juan R. Balaguer, Giuseppe Dibitetto, Jose J. Fernandez-Melgarejo
We consider genuine type IIB string theory (supersymmetric) brane intersections that preserve D Lorentz symmetry. We provide the full supergravity solutions in their analyti…
On the Entanglement Entropy in Gaussian cMERA
Jose J. Fernandez-Melgarejo, Javier Molina-Vilaplana
The continuous Multi Scale Entanglement Renormalization Anstaz (cMERA) consists of a variational method which carries out a real space renormalization scheme on the wavefunctionals…
Jacobi-Lie T-plurality
Jose J. Fernandez-Melgarejo, Yuho Sakatani
We propose a Leibniz algebra, to be called DD, which is a generalization of the Drinfel'd double. We find that there is a one-to-one correspondence between a DD and a Jacob…
Entanglement Entropy: Non-Gaussian States and Strong Coupling
Jose J. Fernandez-Melgarejo, Javier Molina-Vilaplana
In this work we provide a method to study the entanglement entropy for non-Gaussian states that minimize the energy functional of interacting quantum field theories at arbitrary co…
Non-Gaussian Entanglement Renormalization for Quantum Fields
Jose J. Fernandez-Melgarejo, Javier Molina-Vilaplana
In this work, a non-Gaussian cMERA tensor network for interacting quantum field theories (icMERA) is presented. This consists of a continuous tensor network circuit in which the ge…
6D (1,1) Gauged Supergravities from Orientifold Compactifications
Giuseppe Dibitetto, Jose J. Fernandez-Melgarejo, Masato Nozawa
We study dimensional reductions of M-theory/type II strings down to 6D in the presence of fluxes and spacetime filling branes and orientifold planes of different types. We classify…
Exotic branes and mixed-symmetry potentials II: Duality rules and exceptional -form gauge fields
Jose J. Fernandez-Melgarejo, Yuho Sakatani, Shozo Uehara
In U-duality-manifest formulations, supergravity fields are packaged into covariant objects such as the generalized metric and -form fields . While a parame…
Exotic branes and mixed-symmetry potentials I: predictions from symmetry
Jose J. Fernandez-Melgarejo, Yuho Sakatani, Shozo Uehara
Type II string theory or M-theory contains a broad spectrum of gauge potentials. In addition to the standard -form potentials, various mixed-symmetry potentials have been predic…
Black holes and general Freudenthal transformations
L. Borsten, M. J. Duff, J. J. Fernández-Melgarejo +2
We study General Freudenthal Transformations (GFT) on black hole solutions in Einstein-Maxwell-Scalar (super)gravity theories with global symmetry of type . GFT can be conside…
Entanglement Renormalization for Interacting Field Theories
Jose J. Fernandez-Melgarejo, Javier Molina-Vilaplana, Emilio Torrente-Lujan
A general method to build the entanglement renormalization (cMERA) for interacting quantum field theories is presented. We improve upon the well-known Gaussian formalism used in fr…
Weyl invariance of string theories in generalized supergravity backgrounds
Jose J. Fernandez-Melgarejo, Jun-ichi Sakamoto, Yuho Sakatani +1
We revisit Weyl invariance of string theories in generalized supergravity backgrounds. In the previous work arXiv:1703.09213, a possible counterterm was constructed, but it seems t…
Weaving the Exotic Web
Jose J. Fernandez-Melgarejo, Tetsuji Kimura, Yuho Sakatani
String and M-theory contain a family of branes forming U-duality multiplets. In particular, standard branes with codimension higher than or equal to two, can be explicitly found as…
Deformation of SYM with varying couplings via fluxes and intersecting branes
Jaewang Choi, Jose J. Fernandez-Melgarejo, Shigeki Sugimoto
We study deformations of supersymmetric Yang-Mills theory with space-time dependent couplings by embedding probe D3-branes in supergravity backgrounds with non-trivial…
-folds from Yang-Baxter deformations
Jose J. Fernandez-Melgarejo, Jun-ichi Sakamoto, Yuho Sakatani +1
Yang-Baxter (YB) deformations of type IIB string theory have been well studied from the viewpoint of classical integrability. Most of the works, however, are focused upon the local…
Supersymmetric Gauge Theory with Space-time Dependent Couplings
Jaewang Choi, Jose J. Fernandez-Melgarejo, Shigeki Sugimoto
We study deformations of supersymmetric Yang-Mills theory with couplings and masses depending on space-time. The conditions to preserve part of the supersymmetry are d…
Non-Abelian Supertubes
Jose J. Fernandez-Melgarejo, Minkyu Park, Masaki Shigemori
A supertube is a supersymmetric configuration in string theory which occurs when a pair of branes spontaneously polarizes and generates a new dipole charge extended along a closed…
The Odd story of -corrections
Walter H. Baron, Jose J. Fernandez-Melgarejo, Diego Marques +1
The -deformed frame-like Double Field Theory (DFT) is a T-duality and gauge invariant extension of DFT in which generalized Green-Schwarz transformations provide a gauge princi…
Double Field Theory at SL(2) angles
Franz Ciceri, Giuseppe Dibitetto, J. J. Fernandez-Melgarejo +2
An extended field theory is presented that captures the full SL(2) x O(6,6+n) duality group of four-dimensional half-maximal supergravities. The theory has section constraints whos…
A New Approach to Non-Abelian Hydrodynamics
Jose J. Fernandez-Melgarejo, Soo-Jong Rey, Piotr Surówka
We present a new approach to describe hydrodynamics carrying non-Abelian macroscopic degrees of freedom. Based on the Kaluza-Klein compactification of a higher-dimensional neutral…
All gaugings and stable de Sitter in D=7 half-maximal supergravity
Giuseppe Dibitetto, Jose J. Fernández-Melgarejo, Diego Marqués
We study the general formulation of gauged supergravity in seven dimensions with sixteen supercharges keeping duality covariance by means of the embedding tensor formalism. We firs…