Below you can find the list of seminars, group meetings and journal clubs on Gravity and Cosmology held, on a weekly basis (almost), at the Departamento de Física of Universidad de Concepción during 2019-2020. 2020 seminars are being held On-line.
List of seminars: 2021
January 28th, 19:00hrs (GMT-3), Julio Oliva, UdeC, TBA (seminar)
January 21st, 19:00hrs (GMT-3), Sebastián Fuenzalida, UTFSM, Valparaíso, Simulation and analysis of the production of the Higgs boson in pp collisions using PYTHIA and ROOT (seminar)
Recommended links: ATLAS Open Data. Open Data samples. PYTHIA 8January 11th-January 21st, Lecturers: Andrés Anabaló (UAI, Viña del Mar) and Gastón Giribet (UBA, Buenos Aires) School on Classical and Quantum Black Holes.
List of seminars: Second Semester 2020
December 17th, Gaston Giribet, Universidad de Buenos Aires, The BMS symmetry of extremal horizons (seminar)
December 10th, Octavio Fierro, Universidad Católica de la Santísima Concepción, Scalar correlators in holographic neutron stars (seminar)
November 19th, Iván Muñoz, UC, Loops in holographic correlators (seminar)
November 12th, Esteban Arratia y Leonardo Sanhueza, Universidad de Concepción, Taub NUT/Bolt-AdS solutions in Horndeski theory (seminar)
November 5th, Patricio Escalona, Universidad Técnica Federico Santa María, Minimal Vector Dark Matter (seminar)
October 15th, Adolfo Cisterna, Universidad Central de Chile, Black holes in DHOST theories (seminar)
September 30th, Esteban Arratia, Universidad de Concepción, Stellar equilibrium and deformation by external forces (seminar)
September 24th, Marcel Yáñez, Nikhef Theory Group & University of Amsterdam, From IR divergences to resummation procedures in perturbative QCD (seminar)
September 17th, Nicolás Cáceres, Universidad de Concepción, Renormalización Holográfica (seminar)
September 10th, Marcelo Oyarzo, Universidad de Concepción, El espacio de fase de sistemas con ligaduras: Que hacer cuando los \dot{q}’s no se pueden despejar de los p’s (seminar)
September 3rd, Kristiansen Lara, Universidad de Santiago, Holographic DC conductivity in 3D gravity (seminar)
August 27th, Julio Oliva, Universidad de Concepción, Asymptotic symmetries and massive gravity in 2+1-dimensions (seminar)
August 20th, Ricardo Stuardo, Universidad de Concepción, Deformaciones corriente-corriente de modelos de Wess-Zumino-Witten (seminar)
List of seminars: First Semester 2020
José Figueroa, Universidad de Concepción, Simetrías Asintóticas (group meeting)
Ricardo Stuardo, Universidad de Concepción, Una introducción a la deformación tipo TTbar en AdS3 (group meeting)
Leonardo Sanhueza, Universidad de Concepción, Wormholes in AdS (group meeting)
Marcelo Oyarzo, Universidad de Concepción, Meron Black Hole en Einstein-Yang-Mills (group meeting)
Nicolás Cáceres, Universidad de Concepción, Términos de borde en Relatividad General (group meeting)
Moira Venegas, Universidad de Santiago, Relic Density of Axion Dark Matter in Standard and non-Standard Cosmological Scenarios (seminar)
Nicolás Mora, Universidad de Concepción, Kerr-Schild Ansatz in Higher Curvature Gravity (group meeting)
Matias Torres, Universidad de Concepción, Resurgencia (group meeting)
José Barrientos, Universidad de Concepción, Teoría de Horndeski con Torsión y Ondas Gravitacionales (seminar)
Pablo Guilleminot, Universidad Andrés Bello,The first-order Lagrangian and Hamiltonian of Lovelock Gravity (seminar)
Ignacio Araya, Universidad Andrés Bello, Renormalized Holographic Entanglement Entropy of CFTs dual to Lovelock (seminar)
List of activities Semester II-2019:
August 21st, 22nd and 23rd, (11:00-12:30 and 15:00-16:30), Ignacio Araya and Rodrigo Olea (UBB-Santiago): Minicourse on Holographic renormalization with topological terms and Holographic Entanglement Entropy. Poster Material from Holographic entanglement entropy course: Lecture 1, Lecture 2 and Lecture 3.
September 3rd (Tuesday), 12:00. Adolfo Cisterna (UCentral, Santiago): Homogeneous AdS Black Strings in Scalar-Tensor and Lovelock Branes with Fluxes. Abstract: In this talk we will show how it is possible to construct homogenous AdS black strings and black p-branes in GR and Lovelock gravities. We will show their connection with Scalar-Tensor theories and with Kaluza-Klein compactifications in the presence of higher dimensional matter Lagrangians. We will extend our results to construct Lovelock branes with p-form fluxes.
September 11th (Wednesday), 12:00. Julio Oliva, (UdeC) Wormholes in GR in vacuum
October 2nd (Wednesday), 12:00. Pedro Labraña (UBB-Concepción) Universos emergentes y Cosmología Cuántica
October 16th-18th, Jorge Zanelli, CECs (Valdivia) Three Lectures on Gravity in lower dimensions (minicourse)
Wednesday 16th, 15:00-16:00.
Thursday 17th 09:00-10:00
Friday 18th, 12:00-13:00 hrs.
October 17th (Thursday) 15:00-17:00, Nelson Merino, UNAP (Iquique) Chern-Weil theorem and boundary terms in gravity actions (minicourse) Abstract: Two mathematical approaches that are commonly used in the construction of gravity theories: tensorial and Cartan language. It is usually said that they are completely equivalent and that the translation between them should be evident. However, there are cases where a result in one side is not clearly understood in the other, because the translation is not obvious. This is the case of the Katz, Bicak and Lynden-Bell (KBL) procedure, which is constructed in the tensorial language and allows to have a well-defined variational principle as well as finite conserved charges in general relativity. Up to now, it was not known how this method reads in Cartan language, neither how it could be generalized to more general theories (e.g., Lovelock gravity). In this work we use the Chern-Weil theorem and an auxiliary "hybrid" manifold to provide the translation of the Katz boundary term into the Cartan language. As a consequence, this give us a guideline to make the generalization of the KBL procedure for a generic Lovelock gravity. Possible new applications in other contexts (like in double field theory and in the so-called dressing field method) are also discussed.
List of activities Semester I-2019:
March 6th, Julio Oliva (UdeC): Higher curvature gravity in 4D: Inflation from geometry, second order fluctuations on FRW and interesting connections with gravity in 5D (based on arXiv:1811.06523 [hep-th]. See the original arXiv:1812.11187 [hep-th] and also arXiv:1810.08166 [gr-qc])
March 13th, Sebastian Fuenzalida (UdeC): Homogeneous black strings in EGB with Horndeski hair and beyond (based on arXiv:1810.02798 [hep-th])
March 20th, Fabrizio Canfora (CECs): Gravitating Skyrmions and their flat limit
April 17th, Fernando Izaurieta (UdeC): Waves and Torsion (based on arXiv:1901.06400 [gr-qc])
April 24th, Octavio Fierro (UCSC): Chern-Simons theories and some applications in three dimensional gravity (review talk starting at 10:30)
May 15th, Constanza Quijada (UdeC): Non-linear waves on fully resonant wormholes (base on arXiv:1903.08239 [hep-th] to appear in PRD) starting at 12:00 @ Sala Phys
May 22nd, Javier Matulich (ULB & Solvay Institute, Brussels): Two Lectures on Hypergravity starting at 11:00 @ Sala Phys
June 5th: Daniela Narbona (UdeC): Gravitational perturbations of rotating black holes in AdS (work in progress) starting at 12:00 @ Sala E Oelker
June 12th, José Figueroa (UdeC): Quasinormal modes in 2+1 asymptotically flat black holes (based on arXiv:1901.00448 [hep-th])
June 19th: Antonella Cid (UBB): Bayesian comparison of Cosmological Scenarios (based on arXiv:1805.02107 [astro-ph.CO])
June 26th, Cristóbal Corral (UNAB & UA): First-order formalism of gravity: Symmetries, unimodularity, and exact solutions (review talk based on arXiv:1802.04795, 1808.01497, 1808.05522, 1809.02903)