VI Siembra-HoLAGrav Young Frontiers Meeting at ICTP-SAIFR

June 30 – July 11, 2025

ICTP-SAIFR, São Paulo, Brazil

ICTP-SAIFR/IFT-UNESP

Zoom ID: 811 5860 0594
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Over the last few years, the Red(e) Siembra-HoLAGrav has hosted an ongoing series of online Young Frontiers Meetings (YFM), targeted specifically to graduate students and early career researchers. The goal is to bring young Latin American students to the forefront of the research in Holography and related topics and also to give opportunities to young postdocs and advanced students to present their results. The YFM initiative has had an important impact, with around 650 registered participants in total over the first 5 events. A complete recording of all the lectures and talks can be found on our YouTube Channel.

This year we are extremely happy to present the first in-person YFM. It will consist of a two-week graduate school for young researchers from our region, hosted and financed by the ICTP-SAIFR. We hope the event will be extremely useful for the students, spark many scientific collaborations among the participants, and help integrate the new members into the LATAM-HEP community. The topics include black hole microstates, de Sitter holography, matrix models, strings and gravity in AdS3, scattering amplitudes for gravitational waves, and the cosmological bootstrap program.

Applicants are invited to submit abstracts for short talks and posters. The event is targeted at Ph.D. students and masters students with a background in General Relativity and Quantum Field Theory.

There is no registration fee and limited funds are available for travel and local expenses.

Organizers:

  • Mariana Carrillo Gonzalez (Imperial College London, UK)
  • Nicolas Kovensky (IFLP-CONICET, Argentina)
  • Alan Rios Fukelman (King’s College London, UK)
  • Pedro Jorge Martinez (IFLP-CONICET, Argentina)
  • Anayeli Ramirez (KU Leuven, Belgium)
  • Pedro Vieira (Perimeter Institute for Theoretical Physics & ICTP-SAIFR/IFT-UNESP, Canada & Brazil)

 

List of participants here.

 

Announcement:

Application deadline: April 19, 2025 (closed)

 

Lecturers

Lecturers

  • Julio Parra-Martínez (IHES, France): Amplitudes GW problems
  • Alejandra Castro (Cambridge U., DAMTP, UK): BTZ Problem Set.pdf
  • Chiara Toldo (Harvard U., USA & Milan U., Italy): Exercises
  • Guilherme Pimentel (Scuola Normale Superiore, Italy): PSet.pdf
  • Tarek Anous (Queen Mary University of London, UK)
  • Dionysios Anninos (King’s College London, UK)

Registration

Announcement:

Application deadline: April 19, 2025 (closed)

Program

 

Julio Parra-Martínez
Title: Scattering Amplitudes and Effective Field Theory
I will introduce the basics of scattering amplitudes, and how they enable general computations in effective field theories.
Some particular topics that we will cover are: spinor-helicity methods, recursion, RG running and matching, and dispersion relations.

Alejandra Castro
Title: Topics in AdS₃/CFT₂: The Power of Symmetries in Holography
Symmetries are manifest in AdS/CFT. On both sides of the correspondence, conformal symmetries give control and checks. Most importantly, it provides an organisational principle for several observables in AdS gravity. In this lecture, we will see how powerful symmetries are in AdS3/CFT2. One notable aspect of this instance of holography is that symmetries control various non-perturbative aspects of the correspondence (in addition to the perturbative corners that are shared by higher dimensions).
However, this abundance of symmetries, the luxury of having them, also brings a bit of a crisis. The goal of this lecture is to illustrate how to control and overrule the powerful role that symmetries play in AdS3/CFT2. More concretely, three aspects and questions I will aim to convey and discuss are:

  • Present several aspects of AdS3/CFT2 that are purely controlled by symmetries. This will include perturbative and non-perturbative aspects of the correspondence.
  • Provide a preliminary definition of what makes a CFT “holographic”. Here we mean what are the requirements on the CFT such that its dual is well approximated by semi-classical gravity. In this context, try to answer the question: what are the EFTs of AdS gravity that admit a UV completion?
  • Can we find families of CFT2 that comply with these conditions? We will make use of symmetric product orbifolds as a lab to explore how stringent conditions might be and test the lore behind some aspects of AdS3/CFT2.

Chiara Toldo
Title: Black Holes and Quantum Gravity
In General Relativity, black holes are simple objects characterized by few conserved quantities. Yet, they possess huge entropy, hinting at a large number of microscopic states. Understanding the complex microstructure of a black hole falls in the realm of quantum gravity and is one of the topics of these lectures. I will first introduce black hole solutions in General Relativity and String Theory, and the notions of black hole thermodynamics. After discussing the microstate counting for black holes which preserve supersymmetry, I will then focus on the near-extremal black hole regime. For the latter case, I will show how models of JT gravity capture the departure from extremality, and how the quantum corrections to near-extremal black hole entropy can be computed, altering significantly the thermodynamics at low temperature.

Tarek Anous
Title: Statistical Systems Out of Equilibrium
We will study prototypical classical and quantum mechanical out-of-equilibrium statistical systems known as spin glasses. We will cover their importance, both from a theoretical standpoint as well as from the perspective of real world systems. The key takeaways from this course will be the diagnostic tests of out-of-equilibrium dynamics, from dynamical arrest to aging.

Dionysios Anninos
Title: Quantum Aspects of a Λ>0 Universe
We consider properties of quantum fields in de Sitter space and theories of gravity with Λ>0. We discuss group theoretical aspects, based on the large symmetry group of the spacetime, as well as aspects of the Euclidean problem. We contrast cosmological horizons to black hole horizons.

Guilherme Pimentel
Title: Theory of the Initial Conditions of Our Universe
I will describe how observations lead us to the idea that the primordial universe underwent a period of accelerated expansion, cosmic inflation. Then I will describe to you a whole set of techniques to compute the properties of the initial conditions of the universe, using quantum field theory in curved spacetime, methods from scattering amplitudes, conformal symmetry, etc. Time permitting, I will describe a way of understanding the statistics of initial conditions without direct reference to time evolution, using only the space of kinematic variables.

 

Short Talks

June 30, 2025 (Monday)

  • Pedro Schmied – Deforming the Double Liouville String
  • Julian Hernan Toro – Spectral flow and extremal four-point functions on AdS3 x S3 x T4
  • Matheus Curado Ferreira – Cosmological Ghost Collider and Bootstrap
  • Milton Cristian Mamani Leqque – Semiclassical Gravity in PAdS₄: From Hadamard Renormalization to Solutions of Semiclassical Einstein Equations

July 7, 2025 (Monday)

  • Camilo Altazor Nuñez Barra – Casimir energy on the sphere and 6D CFT trace anomaly
  • Oriana Rebeca Labrin – Hamiltonian Approach to Asymptotic Symmetries in Electromagnetism with a Pontryagin Term
  • Cielo Estela Ramirez de Arellano – Universal microscopic entropy and quantum backreactions of Three-dimensional black holes
  • Miroslava Mosso Rojas – Towards a conjectural Quantum Cohomology/Quantum K-Theory correspondence
  • Andres Aaron Argandoña Villavicencio – Position dependence of the holographic entanglement entropy for an accelerating quark-antiquark pair

Posters

July 4, 2025 (Friday)

  • Aditya Jain – Invariants and correlators in 4d SCFTs
  • Aitor Vicente-Cano – Buchdahl inequalities in theories with regular black holes
  • Camilla Lavino – Kaluza-Klein Pertubation Theory for AdS/CFT
  • Cristobal Jesus Moreno – On the D5-brane description of 1/4 BPS latitude Wilson loop in N=4 Super Yang Mills theory
  • Eduardo Ernesto García Reynaldo – Negative longitudinal magnetoresistance in QED induced by electron-positron pair creation in a magnetized plasma.
  • Felipe Matias Sulantay Ibañez – Near AdS_2 Spectroscopy, classification of fermonic operators in N=2 gauged supergravity and corrections to black hole entropy
  • Harsh Harsh – dS gravitational waves
  • João Paulo Cavalcante – Exceptional Point and Hysteresis in Perturbations of Kerr Black Holes
  • Juan Camilo Guzman Martinez – One loop scattering amplitudes in pure non supersymmetric gravity in CHY formalism.
  • Juan Dennis Tejeira Huacani – Correspondence between RNS superstring and Pure spinor formalism on a tree level 4-photon scattering amplitude (title to be confirmed)
  • Loreto Soledad Osorio Navarro – Renormalization of scalar-tensor AdS gravity theories
  • Lucas Pimentel Colmanetti – AdS/CFT methodology applied to strongly coupled systems and the possible interface with non-linear dynamics
  • Luis Felipe Zapata – Global Symmetries and Flavours of the Standard Model
  • Marcos Neves – Quantum communication protocols in a topological framework
  • Maria Foteini Kallimani – Worldline Geometries for Scattering Amplitudes
  • Matías Castillo – Extremal three-point function at 1-loop in AdS/CFT
  • Maximiliano Gabriel Ferro – Finite-Size Corrections in Open Boundary Spin Chains in AdS4/CFT3
  • Nahuel Agustin Yazbek – Tri-vector symmetry of 11D supergravity
  • Nairy Villarreal – A Holographic QCD Model for Plasmas at Finite Temperature and Density
  • Pablo Pereira – Exploring Fermionic Interactions in Quantum Fields on Curved Spacetimes with Torsion
  • Robinson Mancilla – Near-extremal dynamics away from the horizon

July 11, 2025 (Friday)

  • Avijit Das – Renormalization via the Katz Framework in Asymptotically AdS Spacetimes
  • Borja Diez – Inhomogeneous metrics on complex bundles in Lovelock gravity
  • Carlos Eduardo Romero Figueroa – Thermodynamics and Critical Phenomena of Holographic Lifshitz Black Holes: Insights from Extended Thermodynamics and GTD
  • Daniel Antonio Fondevila – Capacity of Entanglement in JT and RST gravity
  • Facundo Lorenzo Cruz – Ladder operators in dS
  • Giuseppe Casale – Lagrangian Double Copy for Supergravity: an Algebraic Approach
  • Jefferson Carlos Torres Oliveira – Multipartite Entanglement and Emergence of Spacetime.
  • Joao Victor Zamperlini dos Santos – Spacetime curvature corrections for the Yukawa potential and its application for the Reissner-Nordström Metric
  • Juan Laurnagaray – Charges and thermodynamics for 5D rotating electrovacuum geometries
  • Leonardo Gonçalves Barbosa – Kiselev black strings: the charged rotating solutions
  • Leonardo Sebastián Gajardo Ruz – Holographic Aspect of Regular Black Holes from Pure Gravity
  • Lucas Agustín Acito – From Extremal to Non-Extremal AdS5 Black Strings
  • Luigy Pinto – On Wilson loops in ABJM theory
  • Luiz Felipe Demétrio – Canonical Quantum Cosmology of a Two Fluid System
  • Mairym Eliana Busnego Barrientos – Quasinormal Mode Amplitudes and Initial Conditions in the Pöschl–Teller Potential
  • María Agustina Pereyra Grau – Hidden symmetries from extra dimensions
  • Mariana Lima – Spin-2 Universal Minimal Solutions on Type IIA and IIB Supergravity
  • Matias Sebastian Briceño – Scalar subleading soft theorems from an infinite tower of charges
  • Monserrat Aguayo – (Quasi-)normal modes of rotating black holes and new solitons in Einstein-Gauss-Bonnet
  • Níckolas de Aguiar Alves – The Sky as a Killing Horizon
  • Nicolás Abate – Quantum information and the C-theorem in de Sitter
  • Rafael Cruz Alvarez – Equivalence of SO(2) self duality and helicity conservation in scattering amplitudes
  • Shivam Singh Kushwah – Bulk Viscosity, Speed of Sound and Contact 3-Structures at Intermediate Coupling

 

Videos and Files

2025-06-30 2025-07-01 2025-07-02 2025-07-03 2025-07-04 2025-07-07
  • 09:30 - Guilherme Pimentel (Scuola Normale Superiore, Italy): Theory of the Initial Conditions of Our Universe - Class 1
  • 11:30 - Tarek Anous (Queen Mary University of London, UK): Statistical Systems Out of Equilibrium - Class 1
  • 14:30 - Guilherme Pimentel (Scuola Normale Superiore, Italy): Theory of the Initial Conditions of Our Universe - Class 3
2025-07-08
  • 09:30 - Tarek Anous (Queen Mary University of London, UK): Statistical Systems Out of Equilibrium - Class 2
  • 11:30 - Guilherme Pimentel (Scuola Normale Superiore, Italy): Theory of the Initial Conditions of Our Universe - Class 2
  • 14:30 - Tarek Anous (Queen Mary University of London, UK): Statistical Systems Out of Equilibrium - Class 3
2025-07-09
  • 09:30 - Dionysios Anninos (King’s College London, UK): Quantum Aspects of a Λ>0 Universe - Class 1
  • 11:30 - Tarek Anous (Queen Mary University of London, UK): Statistical Systems Out of Equilibrium - Class 4
  • 14:30 - Dionysios Anninos (King’s College London, UK): Quantum Aspects of a Λ>0 Universe - Class 2
2025-07-10
  • 09:30 - Guilherme Pimentel (Scuola Normale Superiore, Italy): Theory of the Initial Conditions of Our Universe - Class 4
  • 11:30 - Dionysios Anninos (King’s College London, UK): Quantum Aspects of a Λ>0 Universe - Class 3
  • 14:30 - Guilherme Pimentel (Scuola Normale Superiore, Italy): Theory of the Initial Conditions of Our Universe - Class 5
2025-07-11
  • 09:30 - Dionysios Anninos (King’s College London, UK): Quantum Aspects of a Λ>0 Universe - Class 4
  • 11:30 - Tarek Anous (Queen Mary University of London, UK): Statistical Systems Out of Equilibrium - Class 5
  • 14:30 - Dionysios Anninos (King’s College London, UK): Quantum Aspects of a Λ>0 Universe - Class 5
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Additional Information

Attention! Some participants in ICTP-SAIFR activities have received email from fake travel agencies asking for credit card information. All communication with participants will be made by ICTP-SAIFR staff using an e-mail “@ictp-saifr.org”. We will not send any mailings about accommodation that require a credit card number or any sort of deposit. Also, if you are staying at Hotel Intercity the Universe Paulista, please confirm with the Uber/Taxi driver that the hotel is located at Rua Pamplona 83 in Bela Vista (and not in Jardim Etelvina).

BOARDING PASS: All participants, whose travel has been provided or will be reimbursed by ICTP-SAIFR, should bring the boarding pass  upon registration. The return boarding pass (PDF, if online check-in, scan or picture, if physical) should be sent to secretary@ictp-saifr.org by e-mail.

Visa information: Nationals from several countries in Latin America and Europe are exempt from tourist visa. Nationals from Australia, Canada and USA will be required to obtain a tourist e-visa for visits since April 10, 2025.

Accommodation: Participants whose accommodations are provided by ICTP-SAIFR will stay at Hotel Intercity the Universe Paulista. Other hotel recommendations are available here.

Poster presentation: Participants who are presenting a poster MUST BRING A PRINTED BANNER . The banner size should be at most 1 m (width) x 1,5 m (length). We do not accept A4 or A3 paper.