Name: Bottom-Up Cross-Cutting Workshop “JENAS Initiative: Gravitational Wave Probes of Fundamental Physics”
Start: 2024-02-12T12:00:00+01:00
End: 2024-02-16T13:00:00+01:00
Location: Sapienza University of Rome

Bottom-Up Cross-Cutting Workshop “JENAS Initiative: Gravitational Wave Probes of Fundamental Physics”

from Monday, 12 February 2024 (12:00) to Friday, 16 February 2024 (13:00)

Monday, 12 February 2024

12:00

12:00 - 12:45
Room: Physics Department - Aula Amaldi (Marconi Building)

12:45 Welcome Coffee
Welcome Coffee
12:45 - 13:30
Room: Physics Department - Aula Amaldi (Marconi Building)
13:30 Welcome & Scope of the Workshop - Paolo Pani (Istituto Nazionale di Fisica Nucleare) Tetyana Galatyuk (TU Darmstadt / GSI)
Welcome & Scope of the Workshop
- Paolo Pani (Istituto Nazionale di Fisica Nucleare)
- Tetyana Galatyuk (TU Darmstadt / GSI)
13:30 - 13:45
Room: Physics Department - Aula Amaldi (Marconi Building)
13:45 The QCD equation of state from Heavy ion collisions and neutron star mergers: - Jan Steinheimer-Froschauer (Frankfurt Institute for Advanced Studies)
The QCD equation of state from Heavy ion collisions and neutron star mergers:
- Jan Steinheimer-Froschauer (Frankfurt Institute for Advanced Studies)
13:45 - 14:30
Room: Physics Department - Aula Amaldi (Marconi Building) In this talk I will give a short overview on the current status and challenges in the exploration of dense QCD matter. While in relativistic heavy ion collisions, experiment and theory have been struggling for three decades to get a quantitative understanding of the QCD phase diagram. Only recently, new experimental programs allowed for significant progress. At the same time, the observation of gravitational waves from binary neutron star mergers has opened new venues in the study of dense QCD matter. Based on state-of-the-art models from both communities I intend to show the areas of overlap and opportunities for HIC and BNSM (with a short detour to core-collapse supernovae). In addition I plan to discuss open challenges and give some comments on what we can expect to learn from BNSM and what we should not expect to learn.
14:30 Pions, hyperons and quark matter in neutron star mergers - Andreas Bauswein (GSI Darmstadt)
Pions, hyperons and quark matter in neutron star mergers
- Andreas Bauswein (GSI Darmstadt)
14:30 - 15:15
Room: Physics Department - Aula Amaldi (Marconi Building) We discuss recent calculations investigating the detailed impact of various "non-nucleonic" degrees of freedom in neutron star mergers. Pions are neglected in equation of state tables for merger simualtions but might actually occur in neutron star matter. We quantify their potential impact on the obseravbles of neutron star mergers. We describe a weak but potentially measurable signature of hyperons in neutron star mergers. Finally, we discuss the effects of deconfined quark matter.
15:15 Coffee Break
Coffee Break
15:15 - 15:45
Room: Physics Department - Aula Amaldi (Marconi Building)
15:45 Overview and contributed talks
Overview and contributed talks
15:45 - 18:20
Room: Aula Cabibbo (Fermi Building)
Contributions

15:45 Overview by Conveneers - Massimo Mannarelli (Istituto Nazionale di Fisica Nucleare) Violetta Sagun (University of Coimbra)

16:15 Properties of quark matter in extreme conditions - Massimo Mannarelli (Istituto Nazionale di Fisica Nucleare)

16:40 Constraints on Phase Transition in Neutron Stars in a Generalized Setup - Jan-Erik Christian

17:05 Turbulent magnetic field amplification in binary neutron star mergers - Ricard Aguilera Miret (Hamburg Universität)

17:30 A degeneracy between the effect of dark matter and strongly interacting matter at high densities - Violetta Sagun (University of Coimbra)

17:55 Studying strong-interaction matter under extreme conditions with high-energy heavy-ion experiments - Joachim Stroth (Goethe University Frankfurt)
18:20 Wine & Cheese
Wine & Cheese
18:20 - 19:50
Room: Physics Department - Aula Amaldi (Marconi Building)
Tuesday, 13 February 2024
08:45 The Status of Analytical Theory: Methods and Bench Marks - Ira Rothstein
The Status of Analytical Theory: Methods and Bench Marks
- Ira Rothstein
08:45 - 09:30
Room: Physics Department - Aula Amaldi (Marconi Building)
09:30 Strong gravity as a probe of physics beyond GR and the Standard Model - Katy Clough
Strong gravity as a probe of physics beyond GR and the Standard Model
- Katy Clough
09:30 - 10:15
Room: Physics Department - Aula Amaldi (Marconi Building) I will discuss how GW probes could identify modifications to GR and the presence of new particles beyond the Standard Model. I will focus on how numerical simulations in strong gravity regimes can help us to understand and identify such signatures.
10:15 Coffee
Coffee
10:15 - 10:45
Room: Physics Department - Aula Amaldi (Marconi Building)
10:45 Overview and contributed talks
Overview and contributed talks
10:45 - 13:00
Room: Physics Department - Aula Amaldi (Marconi Building)
Contributions

10:45 Overview by Conveners - Jan Steinheimer-Froschauer (Frankfurt Institute for Advanced Studies) Joachim Stroth (Goethe University Frankfurt)

11:15 Nonequilibrium evolution of quarkonium inside the Quark Gluon Plasma - Antonio Vairo

11:40 Nuclear physics inputs for neutron stars and nucleosynthesis simulations - Guilherme Grams

12:05 NMMA: A nuclear-physics and multi-messenger astrophysics framework to analyze binary neutron star mergers - Nina Kunert (Institute for Physics and Astronomy, University of Potsdam, D-14476 Potsdam, Germany)

12:30 Decoding the phase structure of QCD via particle production at high energy - Anton Andronic (University of Munster)
13:00 Group picture
Group picture
13:00 - 13:05
Room: Physics Department - Aula Amaldi (Marconi Building)

Lunch break
Lunch break
13:00 - 14:30
Room: Physics Department - Aula Amaldi (Marconi Building)
14:30 Ultralight bosons and gravitational waves: theory and observations - Cristiano Palomba (Istituto Nazionale di Fisica Nucleare) Richard Brito
Ultralight bosons and gravitational waves: theory and observations
- Cristiano Palomba (Istituto Nazionale di Fisica Nucleare)
- Richard Brito
14:30 - 15:15
Room: Physics Department - Aula Amaldi (Marconi Building)
15:15 Quantum spacetime in the sky: from the horizon to the vacuum - Niayesh Afshordi
Quantum spacetime in the sky: from the horizon to the vacuum
- Niayesh Afshordi
15:15 - 16:00
Room: Physics Department - Aula Amaldi (Marconi Building) I will discuss two aspects of the quantum fluctuations of vacuum spacetime that can be probed in gravitational wave (GW) observatories. The first is the quantum fluctuations near the horizon that lead to (stimulated) Hawking emission (a.k.a. echoes) AND multipolar deformation of Kerr geometry. The second is an irreducible noise in the GW detectors due to the quantum fluctuations of spacetime geometry. These are both (potential) manifestations of a UV/IR coupling that is inevitable in any non-perturbative theory of quantum gravity.
16:00 Coffee Break
Coffee Break
16:00 - 16:30
Room: Physics Department - Aula Amaldi (Marconi Building)
16:30 Overview and contributed talks
Overview and contributed talks
16:30 - 19:05
Room: Physics Department - Aula Amaldi (Marconi Building)
Contributions

16:30 Overview by Conveneers - David Keitel (UIB) Elisa Maggio (Max Planck Institute for Gravitational Physics, Albert Einstein Institute, Potsdam)

17:00 The ringdown of spinning horizonless compact objects - Elisa Maggio (Max Planck Institute for Gravitational Physics, Albert Einstein Institute, Potsdam)

17:25 Black holes as point particles: from amplitudes to self-force - Riccardo Gonzo (University of Edinburgh)

17:50 Rotating metrics from scattering amplitudes in arbitrary dimensions - Claudio Gambino (Istituto Nazionale di Fisica Nucleare)

18:15 Quantum Gravity Effects on Dark Matter and Gravitational Waves - Rishav Roshan (University of Southampton)
Wednesday, 14 February 2024
09:00 Searching for Nanohertz Gravitational Waves with Pulsar Timing Arrays - Sarah Vigeland
Searching for Nanohertz Gravitational Waves with Pulsar Timing Arrays
- Sarah Vigeland
09:00 - 09:45
Room: Physics Department - Aula Amaldi (Marconi Building) Pulsar timing arrays are sensitive to low-frequency gravitational waves with periods of months to decades. They do so by precisely timing a collection of millisecond pulsars, whose extremely stable rotation makes them ideal for measuring perturbations in spacetime. Gravitational waves induce correlations in the pulse arrival times that follows a characteristic pattern known as the Hellings-Downs curve. Recently, pulsar timing array experiments around the world published the first evidence of nanohertz gravitational waves in the form of a gravitational wave background. In this talk, I will discuss how pulsar timing arrays detect gravitational waves, how we construct pulsar timing arrays, and describe recent results from the NANOGrav collaboration and the International Pulsar Timing Array (IPTA) collaboration.
09:45 The Hubble tension: Status and Perspectives - Nils Schöneberg
The Hubble tension: Status and Perspectives
- Nils Schöneberg
09:45 - 10:30
Room: Physics Department - Aula Amaldi (Marconi Building) The success of the LCDM standard model of cosmology has now been established across a wide range of scales. Yet, despite this incredible success the precise nature of its ingredients has so far remained elusive. To this end, in the past decades a vast experimental effort has been undertaken to measure observables in the local and distant universe to unprecedented precision. These promising measurements have only deepened the mysteries of cosmology, however, as they revealed a growing tension between the current expansion rate of the Universe (specified by the Hubble constant) measured through the local distance ladder and that inferred from the cosmic microwave background. Now that the formal significance of this discrepancy has reached a level of five sigma significance, it is crucial to thoroughly re-examine the astrophysical observations at the heart of this Hubble tension. Similarly important is the role of looking at the future experimental efforts that are certain to bring striking new evidence that will help us to solve this cosmic puzzle.
10:30 Coffee
Coffee
10:30 - 11:00
Room: Physics Department - Aula Amaldi (Marconi Building)
11:00 Constraints on cosmological sources of gravitational waves with pulsar timing arrays - Gabriele Franciolini (CERN)
Constraints on cosmological sources of gravitational waves with pulsar timing arrays
- Gabriele Franciolini (CERN)
11:00 - 11:45
Room: Physics Department - Aula Amaldi (Marconi Building)
11:45 Gravitational wave analysis with machine learning - Maximilian Dax
Gravitational wave analysis with machine learning
- Maximilian Dax
11:45 - 12:30
Room: Physics Department - Aula Amaldi (Marconi Building)
12:30 Lunch
Lunch
12:30 - 14:00
Room: Physics Department - Aula Amaldi (Marconi Building)
14:00 Overview and contributed talks
Overview and contributed talks
14:00 - 15:20
Room: Physics Department - Aula Amaldi (Marconi Building)
Contributions

14:00 Overview by Conveneers - Carlo Tasillo (DESY Hamburg) Simone Mastrogiovanni (Istituto Nazionale di Fisica Nucleare)

14:30 Timing the cosmic expansion with populations of gravitational waves dark sirens - Simone Mastrogiovanni (Istituto Nazionale di Fisica Nucleare)

14:55 A Global Network of Cavities to Search for Gravitational Waves (GravNet): A novel scheme to hunt gravitational waves signatures from the early universe - Kristof Schmieden (CERN)
15:20 WG4 Talks
WG4 Talks
15:20 - 16:10
Room: Physics Department - Aula Amaldi (Marconi Building)
Contributions

15:20 Exploring new physics with pulsar timing arrays - Carlo Tasillo (DESY Hamburg)

15:45 New probe for non-Gaussianities with primordial black hole induced gravitational waves - Theodoros Papanikolaou
16:10 Coffee
Coffee
16:10 - 16:40
Room: Physics Department - Aula Amaldi (Marconi Building)

16:40 Report from Conveners of WG1, WG2
Report from Conveners of WG1, WG2
16:40 - 18:00
Room: Physics Department - Aula Amaldi (Marconi Building)

18:30 Board Meeting
Board Meeting
18:30 - 19:30
Room: Physics Department - Aula Amaldi (Marconi Building)
Thursday, 15 February 2024
09:00 various contributions
various contributions
09:00 - 11:00
Room: Physics Department - Aula Amaldi (Marconi Building)
Contributions

09:00 The challenge of Low Frequency sensitivity enhancement with Einstein Telescope, a general overview - Ettore Majorana (Istituto Nazionale di Fisica Nucleare)

09:25 LISA, the first space-based gravitational wave observatory - Alberto Sesana (Universita` di Milano Bicocca)

09:50 Closing gaps in the GW spectrum: new physics with muHz GWs and ideas to detect them - Diego Blas Temiño

10:15 Opportunities for gravitational wave searches at high frequencies - Krisztian Peters

10:40 Round Table
11:00 Coffee
Coffee
11:00 - 11:30
Room: Physics Department - Aula Amaldi (Marconi Building)
11:30 GW tests of gravity: past, present and future - Michalis Agathos
GW tests of gravity: past, present and future
- Michalis Agathos
11:30 - 12:15
Room: Physics Department - Aula Amaldi (Marconi Building)
12:15 Distinguishing between environmental effects around binary black holes - Philippa Cole (University of Amsterdam)
Distinguishing between environmental effects around binary black holes
- Philippa Cole (University of Amsterdam)
12:15 - 13:00
Room: Physics Department - Aula Amaldi (Marconi Building)
13:00 Lunch
Lunch
13:00 - 14:30
Room: Physics Department - Aula Amaldi (Marconi Building)
14:30 GWs and Dark Matter
GWs and Dark Matter
14:30 - 14:55
Room: Physics Department - Aula Amaldi (Marconi Building)
Contributions

14:30 Dynamical friction on compact binary systems - Vincent Desjacques
14:55 Report from Conveners of WG3 and WG4
Report from Conveners of WG3 and WG4
14:55 - 16:25
Room: Physics Department - Aula Amaldi (Marconi Building)

16:25 Coffee
Coffee
16:25 - 16:55
Room: Physics Department - Aula Amaldi (Marconi Building)
Friday, 16 February 2024
09:00 Primordial Black Holes: formation and cosmological impact in the current Universe - Ilia Musco (Istituto Nazionale di Fisica Nucleare, Rome)
Primordial Black Holes: formation and cosmological impact in the current Universe
- Ilia Musco (Istituto Nazionale di Fisica Nucleare, Rome)
09:00 - 09:45
Room: Physics Department - Aula Amaldi (Marconi Building)
09:45 A Bayesian investigation of the neutron star equation-of-state vs. gravity degeneracy - Bhaskar Biswas (Universität Hamburg)
A Bayesian investigation of the neutron star equation-of-state vs. gravity degeneracy
- Bhaskar Biswas (Universität Hamburg)
09:45 - 10:10
Room: Physics Department - Aula Amaldi (Marconi Building)
10:10 Some aspects of the three-body problem in General Relativity - Adrien Benoit Kuntz (SISSA, Trieste)
Some aspects of the three-body problem in General Relativity
- Adrien Benoit Kuntz (SISSA, Trieste)
10:10 - 10:35
Room: Physics Department - Aula Amaldi (Marconi Building)
10:35 Closing and Next Actions - Paolo Pani (Sapienza University of Rome & INFN Roma1) Tetyana Galatyuk (TU Darmstadt / GSI)
Closing and Next Actions
- Paolo Pani (Sapienza University of Rome & INFN Roma1)
- Tetyana Galatyuk (TU Darmstadt / GSI)
10:35 - 10:55
Room: Physics Department - Aula Amaldi (Marconi Building)
10:55 Coffee
Coffee
10:55 - 11:25
Room: Physics Department - Aula Amaldi (Marconi Building)