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String Theory as a Bridge between Gauge Theory and Quantum Gravity

17–19 Feb 2025
Sapienza University of Rome
Europe/Rome timezone

Dr. Alessandra Curto

Contribution List

25 out of 25 displayed
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  1. 105. Registration
    17/02/2025, 08:45
  2. 107. Welcome
    Massimo Bianchi (Istituto Nazionale di Fisica Nucleare)
    17/02/2025, 09:15
  3. 108. Quantum Cross-section of Near-extremal Black Holes
    Roberto Alejandro Emparan Garcia De Salazar
    17/02/2025, 09:30

    We explore how to detect the large quantum fluctuations in the throat of a near-extremal black hole, where the dynamics are governed by the Schwarzian theory. To this end, we scatter a low-frequency wave of a massless, minimal scalar off the black hole and calculate the absorption cross-section. We find that in the strongly coupled regime the absorption cross-section exceeds the semiclassical...

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  4. 109. Themelia, spikes, bulges, black poles, scars … and what they teach us about black holes
    Iosif Bena
    17/02/2025, 10:15
  5. 110. Can We Observe the Breakdown of Effective Field Theory at Black Hole Horizons?
    Daniel Mayerson
    17/02/2025, 11:30
  6. 111. What is the Bridge between Gauge Theories and Quantum Gravity at low Energies?
    Jan de Boer
    17/02/2025, 12:15
  7. 112. Spinning up the black hole – string correspondence
    Andrea Puhm
    17/02/2025, 15:15

    The correspondence principle between strings and black holes is a general framework for matching black holes and massive states of fundamental strings at a point where their physical properties (such as mass, entropy and temperature) smoothly agree with each other. As such it offers a statistical interpretation of black hole entropy. I will discuss the extension of this correspondence...

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  8. 114. Novel AdS vacua from dynamical open strings
    Giuseppe Sudano (Istituto Nazionale di Fisica Nucleare)
    17/02/2025, 16:00

    We consider massive type IIA Supergravity compactified down to
    4 dimensions on twisted tori or down to 7 dimensions on a 3-sphere, in
    presence of D6 branes and O6 planes. Both these instances admit a gauged
    Supergravity description, with a quadratic potential in the embedding
    tensor components. The dynamics of open strings is taken into account by
    adding extra vector multiplets and...

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  9. 113. The i-epsilon Prescription for String Amplitudes and Regularised Modular Integrals
    Jan Manschot
    17/02/2025, 16:45

    I will discuss one-loop amplitudes in string theory, and in particular their analytic continuation based on a string theoretic analog of the i-epsilon prescription of quantum field theory. For various zero- and two-point one-loop amplitudes of both open and closed strings, I will explain that this analytic continuation is equivalent to a regularization using generalized exponential integrals....

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  10. 115. Non-BPS branes as holographic symmetry operators
    Diego Rodriguez Gomez
    18/02/2025, 09:00

    We propose a holographic description of the operators implementing continuous global symmetries that are dual to superstring gauge fields in terms of non-BPS D- branes, and consider some possible further extensions.

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  11. 116. Integrated correlators in a N=2 SYM theory with fundamental flavors
    Paolo Vallarino (Università di Torino)
    18/02/2025, 09:45

    I will discuss recent developments in the study of integrated 4-point correlators of primary operators in a four-dimensional \mathcal{N}=2 superconformal field theory with SU(N) gauge group and matter in the fundamental and anti-symmetric representations. Exploiting supersymmetric localization, it is possible to map the computation of these correlators to an interacting matrix model and obtain...

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  12. 117. The future of Cosmic Microwave Background measurements
    Paolo De Bernardis (Istituto Nazionale di Fisica Nucleare)
    18/02/2025, 11:10
  13. 118. From Holographic Correlators in the Sky to Euclidean AdS
    Charlotte Sleight (Istituto Nazionale di Fisica Nucleare)
    18/02/2025, 11:55
  14. 119. The AdS4 × CP3 Virasoro-Shapiro Amplitude
    Tobias Hansen
    18/02/2025, 14:30

    I will present the derivation of the AdS Virasoro-Shapiro amplitude for the scattering of gravitons in type IIA string theory on AdS4xCP3. This is achieved by combining the structure of the OPE in the AdS/CFT dual ABJM theory with an ansatz for the amplitude as a string worldsheet integral over single-valued polylogarithms. In this way we fix the first two curvature corrections, which satisfy...

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  15. 120. Gravitational Waves form a quantum-field-theory perspective
    Jan Steinhoff
    18/02/2025, 15:15

    This talk discusses how quantum-field-theory methods can be applied to
    model (classical) gravitational waves, in particular tidal effects, spin
    effects, and effects beyond general relativity.

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  16. 121. S-matrix tools for bound waveform modelling
    Riccardo Gonzo (University of Edinburgh)
    18/02/2025, 16:40

    We will show how scattering orbits can inform bound-orbit models, allowing to harness the power of the S-matrix to construct gravitational waveforms relevant for the dynamics of compact binary systems. First, I will derive the radial action from the worldline formalism, focusing for simplicity on the probe limit in a Kerr background. Then, I will show that such radial action (and the S-matrix)...

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  17. 122. Source Multipoles and Energy-Momentum Tensors for Spinning Black Holes and Other Compact Objects
    Claudio Gambino (Istituto Nazionale di Fisica Nucleare)
    18/02/2025, 17:25

    Inspired by the scattering amplitude program applied to General Relativity, we define the most general energy-momentum tensor constructed from mass and spin in momentum space and arbitrary dimensions. Through this approach, we establish a one-to-one correspondence between the form factors that characterize the source and the gravitational multipole moments of the induced spacetime, providing a...

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  18. 123. Quantum Field Theory on AdS
    Elias Kiritsis
    19/02/2025, 09:00
  19. 124. A compendium of logarithmic corrections in AdS/CFT
    Nikolay Bobev
    19/02/2025, 09:45

    I will discuss logarithmic corrections to various CFT partition functions in the context of the AdS_4/CFT_3 correspondence for theories arising on the worldvolume of M2-branes. I will use four-dimensional gauged supergravity and heat kernel methods to derive general expressions for the logarithmic corrections to the gravitational on-shell action or black hole entropy for a number of different...

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  20. 125. Continuous TQFTs and non-invertible symmetries
    Riccardo Argurio
    19/02/2025, 11:10
  21. 126. Symmetry Breaking from Monopole Condensation in 3d QED
    Pierluigi Niro
    19/02/2025, 11:55

    QED in 2+1 dimensions is among the simplest and yet very rich examples of strongly interacting gauge theories, arising in many physical contexts. When the number of electrons is large, the theory is known to flow to a symmetry-preserving interacting CFT at low energies, but this scenario is excluded below some critical value of the number of electrons. Focusing on the case of two electrons, we...

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  22. 127. Viviana Fafone
    Viviana Fafone (Istituto Nazionale di Fisica Nucleare)
    19/02/2025, 14:10
  23. 128. Matrix-Models/Large-Charge Duality at Higher Ranks
    Alba Grassi
    19/02/2025, 14:55
  24. 129. Lessons from Non-Supersymmetric Strings
    Augusto Sagnotti (PI)
    19/02/2025, 16:20
  25. 132. Closing and good-byes
    19/02/2025, 17:05