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Grant number: | 16/12605-2 |

Support type: | Regular Research Grants |

Duration: | December 01, 2016 - November 30, 2018 |

Field of knowledge: | Physical Sciences and Mathematics - Physics |

Principal Investigator: | Betti Hartmann |

Grantee: | Betti Hartmann |

Home Institution: | Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil |

Assoc. researchers: | Arindam Lala ; Clisthenis Ponce Constantinidis ; Gabriel Luchini Martins ; Jon Urrestilla ; Luiz Agostinho Ferreira ; Yves Brihaye |

**Abstract**

The Anti-de Sitter/Conformal Field Theory (AdS/CFT) correspondence is one of the most important results of String Theory and is the best tested example of the more general gauge/gravity duality. It states that a String theory in Anti-de Sitter space-time (AdS) is dual to a Conformal Quantum Field Theory (CFT) on the boundary of AdS. In particular, the duality connects strongly coupled Quantum Field Theories in d space-time dimensions to weakly coupled gravity theories in (d+1) dimensions and as such is also often denoted to be holographic.In recent years it has been suggested that this fact can be used to gain easier excess to strongly coupled Quantum Field Theories. Examples are real-time, high density processes in Quantum Chromodynamics as well as high temperature superconductivity which is presumably driven by strong interaction processes. In both cases experimental data exists which can be used to test the correspondence. In this context, it is, of course, of great importance to understand the stability of space-times that are asymptotically AdS and even the stability of AdS itself. For static and stationary cases, the instability of black hole and soliton solutions to the formation of non-trivial fields in their asymptotically AdS space-times can be used to describe non-vanishing expectation values of the operators of the dual field theory. Moreover, the description of dynamical processes in AdS is of huge interest with view to the dual theory, but has also significancewhen studying fundamental properties such as the non-linear (in)stability of AdS itself. Recent results suggest that the excitation of modes inherent to the systems under study play a fundamental role. This project aims at shedding further light on both topics by (a) studying static and stationary situations in asymptotically AdS that allowto describe more structure in the dual field theory and (b) making an in-depth analysisof dynamical situations in AdS by using simple systems in lower dimensions and clarifying the role of excited modes in these cases. (AU)

Scientific publications
(7)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BRIHAYE, YVES;
HARTMANN, BETTI.
Spontaneous scalarization of boson stars.
** Journal of High Energy Physics**,
n. 9
SEP 6 2019.
Web of Science Citations: 0.

BRIHAYE, YVES;
HARTMANN, BETTI.
Spontaneous scalarization of charged black holes at the approach to extremality.
** Physics Letters B**,
v. 792,
p. 244-250,
MAY 10 2019.
Web of Science Citations: 5.

BRIHAYE, YVES;
HARTMANN, BETTI.
Charged scalar-tensor solitons and black holes with (approximate) Anti-de Sitter asymptotics.
** Journal of High Energy Physics**,
n. 1
JAN 16 2019.
Web of Science Citations: 0.

BRIHAYE, YVES;
HARTMANN, BETTI.
Critical phenomena of charged Einstein-Gauss-Bonnet black holes with charged scalar hair.
** Classical and Quantum Gravity**,
v. 35,
n. 17
SEP 6 2018.
Web of Science Citations: 2.

BRIHAYE, YVES;
HARTMANN, BETTI;
URRESTILLA, JON.
Solitons and black hole in shift symmetric scalar-tensor gravity with cosmological constant.
** Journal of High Energy Physics**,
n. 6
JUN 14 2018.
Web of Science Citations: 3.

HARTMANN, BETTI;
MICHEL, FLORENT;
PETER, PATRICK.
Excited cosmic strings with superconducting currents.
** Physical Review D**,
v. 96,
n. 12
DEC 26 2017.
Web of Science Citations: 1.

BRIHAYE, YVES;
HARTMANN, BETTI.
Charged black holes in a generalized scalar-tensor gravity model.
** Physics Letters B**,
v. 772,
p. 476-482,
SEP 10 2017.
Web of Science Citations: 1.

Please report errors in scientific publications list by writing to:
cdi@fapesp.br.