CV Lattes
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Universidade Estadual Paulista (UNESP). Campus de São Paulo. Instituto de Física Teórica (IFT) (Institutional affiliation from the last research proposal) Birthplace: Romênia
Bachelor's in Physics from Facultatea de Fizica, Universitatea Bucuresti (1995) and doctorate from State University of New York at Stony Brook (2000). He is currently researcher I (permanent) at Universidade Estadual Paulista Júlio de Mesquita Filho. Has experience in Physics, focusing on General Theory of Particles and Fields, in particular String theory. (Source: Lattes Curriculum)
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This project intends to characterize and generalize a new kind of holographic phase transition recently found by us in (see [1]). It will allow us to provide a theoretical description of new phases of matter and study at the same time the intricate phase space of black holes and solitons in string theory. Indeed, nowadays it is widely acknowledged that the partition function of the large …
This proposal puts together specialists in various areas of string theory and quantum field theory and their applications in order to analyze and apply various aspects of gauge/gravity duality. This duality and its applications are one of the most important and active areas of research in theoretical physics, and we are fortunate that São Paulo is emerging as the leading center for it not…
This project is based on an exciting recent finding of the visiting professor on the existence of supersymmetric solitons, for certain boundary conditions, in the Einstein-Maxwell-AdS theory in four and five dimensions [1]. This indicates the existence of new ground states of quantum gravity defined by M-theory and type IIB supergravity.The project intends to characterize these new soluti…
This project intends to bring together a strong team of researchers to tackle two of the most important problems of theoretical physics. Namely, the description of strongly coupled phenomena and of quantum gravity. The strategy to be used is promising and fascinating, that is, the use of holographic duality. Holography is a precise mathematical tool that is realized through the AdS/CFT di…
(Only some records are available in English at this moment)
AdS/CMT is a more phenomenological version of the AdS/CFT correspondence, for use in condensed matter systems. The standard thermal phase transition, between superconductor (or superfluid) and normal phases, is described by an AdS black hole, with or without charge, with a scalar field added on, that changes the horizon boundary conditions. A quantum critical phase transition, on the oth…
Quantum complexity is a recently introduced concept, describing a relation of a quantum state to a reference state, and in the context of Quantum Field Theory (QFT), it was first defined in AdS/CFT. More recently, in 2019, Krylov complexity (and later spread complexity) was introduced, as an algorithmically calculated quantity, also related to a notion of entropy, and capable of detecting…
The AdS/CFT correspondence and gauge/gravity dualities, in their "top-down"form, relate holographically string theory in a gravitational background with a quantum field theory on the boundary, relating strong vs. weak coupling. Its Penrose limit gives the pp wave correspondence, in which strings appear explicitly in the gravitational background, and spin chains appear in the field theory.…
(Only some records are available in English at this moment)
The AdS/CFT correspondence and its generalization, gauge/gravity duality, relates holographically a gravitational theory in a background spacetime to a field theory living at the boundary of its space. But it can be applied also to cosmology, in the strong coupling gravity regime, being dual to a 3-dimensional perturbative field theory. The example was started by therelation $\Psi(\Phi)=Z…
Integrable structures in physical systems allow the analytical calculation of several physical observables. This project aims to analyze and describe these structures in the Ads/CFT correspondence. Using integrable deformations (Yang Baxter) of the AdS5/N = 4 SYM correspondence, we can engineer several families of gauge theories preserving N = 1 and N = 2 supersymmetries. The analysis of …
In this project, we will study the worldsheet action of string theory on parallel plane, or ``pp'' waves, obtained in a certain limit of gravitational spaces used for the AdS/CFT correspondence, and show that by discretization, we obtain a quantum mechanical action that is obtained in the context of the Heisenberg spin chain for spins in a condensed matter system. We will also consider …
(Only some records are available in English at this moment)
In recent years, the study of two-dimensional (2D) sigma models has been crucial for advancing both theoretical physics and mathematical physics, particularly due to their deep connections with string theory, dualities, and integrability. This project focuses on exploring T-duality and TTbar-like deformations within the framework of 2D (super)sigma models, utilizing the superspace formali…
Looking for deformations of the integrable Principal Chiral Model (PCM) that preserve its integrable structure allows us to investigate different portions of the space of integrable models. In this context, a large class of deformations of the PCM are the so called Yang Baxter (YB) deformations. One particularly interesting type of YB deformation is the $\eta$-deformation, first introduce…
Looking for deformations of the integrable Principal Chiral Model (PCM) that preserve its integrable structure allows us to investigate different portions of the space of integrable models. In this context, a large class of deformations of the PCM are the so called Yang Baxter (YB) deformations. One particularly interesting type of YB deformation is the $\eta$-deformation, first introduce…
We propose to study the holographic duality using a different approach to gravity. In a series of papers G. Dvali and C. Gomez propose that black holes are a Bose-Einstein condensate of soft gravitons and, as a consequence, are able to explain apparent paradoxes previously not understood from a semi-classical approach. A generalization of their idea is to study spaces with a non-vanishing…
The AdS/CFT correspondence relates a gravitational theory in AdS_{d+1} to a conformal field theory on its flat d-dimensional boundary, and a quasi-phenomenological approach was used to apply it to condensed matter systems. One application involves the holographic superconductivity. In order to describe a superconductor one needs a notion of temperature and a condensate. On the gravity sid…
The supersymmetric gauge theory N=4 Super-Yang-Mills in four dimensions is a superconformal theory and is believed to be integrable forany value of the coupling constant. In addition, due to the AdS/CFT conjecture, this theory is considered to be dual to the theory of superstrings in AdS_5 x S^5.Using integrability techniques, the computation of the spectrum of the theory is considered to…
(Only some records are available in English at this moment)
| 2 / 2 | Ongoing grants |
| 5 / 5 | Completed research grants |
| 6 / 6 | Ongoing scholarships in Brazil |
| 17 / 17 | Completed scholarships in Brazil |
| 3 / 3 | Ongoing scholarships abroad |
| 4 / 4 | Completed scholarships abroad |
| 37 / 37 | All research grants and scholarships |
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