New Frontiers in Theoretical Physics - XXXVII Convegno Nazionale di Fisica Teorica

Session

Topical Talks

Sep 27, 2023, 9:45 AM

Palazzone della Scuola Normale Superiore di Pisa, Cortona

9. Maxwell theory of fractons

Erica Bertolini

9/27/23, 9:45 AM

In this talk I will show that the main properties of the fracton quasiparticles can be derived from a generalized covariant Maxwell-like action. Starting from a rank-2 symmetric tensor field, a partially symmetric rank-3 tensor field strength can be built, which obeys a kind of Bianchi identity. The most general action invariant under the covariant “fracton” transformation consists of two...

10. Modeling chromosome organization in SARS-CoV-2 infected genomes with Polymer Physics

Andrea Maria Chiariello

9/27/23, 10:05 AM

Within the cell nucleus of eukaryotic organisms, chromosomes are organized in a complex, non-random three-dimensional (3D) spatial structure, which is intimately linked to vital functional purposes. Indeed, a correct folding allows an efficient communication between genes and their distal regulatory elements while, if altered, can cause severe diseases. Here I will discuss how Polymer Physics,...

11. Exact perturbative methods

Bruno Bucciotti

9/27/23, 10:25 AM

Obtaining accurate predictions for quantum theories is of paramount importance. Perturbation series are often divergent and non Borel summable, making the problem challenging.
Here we further explore exact perturbation theory (EPT) in quantum mechanics, first proposed in [Serone '17]. In this context, we can compare EPT with the well established exact wkb (EWKB) method. For bounded systems,...

113. Firetalks

Daniele Roselli, Mauro Giliberti, Remo Garattini

9/27/23, 10:45 AM

1. Casimir Wormholes and beyond
2. Numerical Study of Bubble Dynamics in Holographic Vacuum Decay
3. Quantum field corrections to the equation of state of freely streaming matter in the Friedman-Robertson-Walker space-time

12. Callan-Rubakov effect in a chiral gauge theory

Andrea Luzio

9/27/23, 11:30 AM

Monopoles are a generic prediction of many UV completion of a U(1) gauge theory and, more importantly, might be part of our physical world.
Surprisingly the scattering of an s-wave massless fermion on a massive monopole is a subtle (and puzzling) problem.
In a vector-like theory, the solution is the Callan-Rubakov effect, which saves unitarity and gauge charge conservation, breaking the...

13. Bootstrapping effective field theories of photons

Francesco Russo

9/27/23, 11:50 AM

We use general assumptions of the unknown UV theory to constrain the IR physics of photons. Specifically, we can consider causality and unitarity of the S-matrix to set up a bootstrap problem. By solving it with numerical optimisation methods, we obtain the allowed EFT coefficients which are consistent with a unitary and causal UV completion.

114. Firetalks

Andrea Arduino, Elia de Sabbata, Federico Manzoni

9/27/23, 12:10 PM

1. String Theory and Noncommutative QFT on Time-Dependent Backgrounds: a Big Bang Type Singularity
2. Analytic Bootstrap in Critical O(N) Line Defect Models
3. Duality and asymptotic symmetries

14. New results for the Schwinger model from the lattice

Bernardo Zan (Princeton)

9/27/23, 12:25 PM

47. Kination in String Theory

Filippo Revello

9/27/23, 3:15 PM

I will discuss some theoretical and phenomenological implications of a string theory-inspired, cosmological phase of kination, dominated by the kinetic energy of a rapidly rolling scalar. In the first part of the talk, I will argue how such a kination epoch can naturally arise in string compactifications after inflation, focusing on the case where it is driven by the volume modulus. I will...

48. A first-order formalism for non-supersymmetric strings

Salvatore Raucci

9/27/23, 3:35 PM

49. Classical Gravitational Bound States with Amplitudes

Riccardo Gonzo

9/27/23, 3:55 PM

115. Firetalks

Alessio Fontanarossa, Davide Morgante

9/27/23, 4:15 PM

1. Branes Wrapped on Orbifolds and Holography
2. Sporadic dualities from tensor deconfinement

17. Strong-coupling results in N=2 superconformal gauge theories

Paolo Vallarino

9/27/23, 5:00 PM

In this talk I will discuss recent developments in the study of 3-point functions of chiral single-trace scalar operators in four-dimensional N=2
superconformal gauge theories. Using supersymmetric localization, it is possible to map the computation of these correlators to an interacting matrix model and obtain expressions that are valid for any value of the ’t Hooft coupling in the planar...

18. A recipe for genuine lines: 1-form symmetries in N=3 S-folds

Simone Rota

9/27/23, 5:20 PM

I will discuss the classification of 1-form symmetries in N=3
four dimentional SCFTs engineered in Type IIB in presence of an S-fold.
The charge lattice of the theories is obtained by analyzing
(p,q)-strings on the S-fold background. Then the line operators are determined via field-theoretical techniques, that I will explain. The 1-form symmetries and the possible global structures are...

116. Firetalks

Marcia Rodrigues Tenser, Marco De Cesare, Matteo Romoli

9/27/23, 5:40 PM

1. Defect RG flows in 3d Chern-Simons-matter theory
2. Back-reaction of scalar waves on black holes at low frequencies
3. Double copy perspective on asymptotic symmetries

19. Gravitational waves from scattering amplitudes

Carlo Heissenberg (NORDITA and Uppsala U)

9/27/23, 5:55 PM

22. On the ultraviolet asymptotics of the glueball effective action in large-N Yang-Mills theory

Francesco Scardino

9/28/23, 9:45 AM

We shed light on the ultraviolet (UV) structure of the glueball effective action
to the next-to-leading large-N order in Yang-Mills (YM) theory
by effectively computing the UV asymptotics of a closely related object:
The generating functional of all the correlators of twist-2 operators
with maximal spin components.
We discuss several issues occurring in the above computation
that sets...

23. RG-running of the tensor currents for 𝑁𝑓= 3 QCD in a 𝜒SF setup

Ludovica Pirelli

9/28/23, 10:05 AM

We perform the complete non-perturbative running of the flavour non-singlet tensor operator from hadronic to electroweak scales in Nf = 3 massless QCD, comparing four different definitions of the renormalisation constant. We use the same configuration ensembles of arXiv:1802.05243, subject to Schrödinger Functional (SF) boundary conditions, whereas we use valence quarks with (𝜒SF) boundary...

24. Radiative leptonic decays of pseudoscalar mesons from lattice QCD

Giuseppe Gagliardi

9/28/23, 10:25 AM

Radiative leptonic decays of the form P -> l nu gamma, where P
is a charged pseudoscalar meson and l a lepton, are interesting probes of New Physics beyond the SM. When the pseudoscalar P is heavy (e.g. for P=D, Ds, B) and the lepton l is light, the structure-dependent contributions to the decay rate are enhanced w.r.t. the point-like one by a factor (mp/ml)^2, making the corresponding decay...

117. Firetalks

Alessandro De Santis

9/28/23, 10:45 AM

1. Extracting hadronic spectral densities from Lattice QCD correlators

25. Modular invariance and the strong CP problem

Arsenii Titov

9/28/23, 11:30 AM

We propose a novel solution to the strong CP problem based on modular invariance. The latter is inherent to toroidal compactifications in string theory. We show that modular invariance allows for simple effective theories of flavour and CP where (i) the QCD angle vanishes, (ii) the CKM phase is large, (iii) quark and lepton masses and mixings can be reproduced up to order one coefficients. We...

26. Nucleon spin structure in Holographic QCD

Federico Castellani

9/28/23, 11:50 AM

Spin observables yield a wealth of tests to our current understanding of
the nucleon internal structure. In particular, novel challenging
experimental data from Jefferson Lab have been published on the so-called
generalized spin polarizabilities, which quantify the spin-dependent
internal rearrangement of the nucleon probed by an external virtual photon.
We compute the resonance...

118. Firetalks

Gael Finauri, Simone Marciano

9/28/23, 12:10 PM

1. QCD Light-Cone Distribution Amplitudes of Heavy Mesons from boosted HQET
2. PDF Neutrino masses and unitarity violation from higher SU(2) representations

27. Tetra- e Pentaquarks: La spettroscopia degli adroni esotici

Alessandro Pilloni (Messina)

9/28/23, 12:25 PM

29. Inclusive rare Lambdab decays to photon

Francesco Loparco

9/28/23, 3:15 PM

I present an analysis of the inclusive Hb -> Xs gamma decay with Hb a beauty baryon, in particular Lambdab, employing an expansion in the heavy quark mass at
at leading order in alphas. For a polarized baryon I show the results for the distribution d2Gamma/dy/dcos(thetap), with y=2 Egamma/mb, Egamma the photon energy and thetap the angle between the baryon spin vector and the photon...

30. Top-quark loops in gg->ZH and gg->ZZ via a transverse momentum expansion

Marco Vitti

9/28/23, 3:35 PM

In this talk I will present some recent developments in the calculation of the NLO QCD corrections for two gluon-initiated processes that are relevant for Higgs physics at the LHC, namely gg->ZH and gg->ZZ. The two-loop box diagrams with massive internal lines contributing to these amplitudes pose a technical challenge, and I will discuss their analytic calculation using a...

31. LePDF: Standard Model PDFs for High-Energy Lepton Colliders

Francesco Garosi

9/28/23, 3:55 PM

At present the Large Hadron Collider at CERN is our only tool for direct exploration of physics at the electroweak (EW) scale and above and it proved to be a formidable machine for both searches of new heavy particles as well as precision studies at the EW scale. Nevertheless the next large-scale experiment in high-energy physics is likely to be a lepton collider and among the proposed options...

119. Firetalks

Clara Lavinia Del Pio, Sehar Ajmal, Stefano Di Noi

9/28/23, 4:15 PM

1. Phenomenology at the LHC of Composite Boson Leptoquarks from strongly interacting Standard Model fermions via four-fermion operators of NJL type
2. Testing the Standard Model at high energies: the weak mixing angle
3. Running effects in pp → tth production in the SMEFT

32. An updated view on the X17 hypothesis

Claudio Toni

9/28/23, 5:00 PM

In view of the latest experimental results recently released by the ATOMKI collaboration, we critically re-examine the possible theoretical interpretation of the observed anomalies in terms of a new BSM boson X with mass ∼ 17 MeV. Employing a multipole expansion method, we estimate the range of values of the nucleon couplings to the new light state in order to match the experimental...

33. Radiative corrections for the MUonE experiment

Andrea Gurgone

9/28/23, 5:20 PM

One of the most intriguing signals beyond the Standard Model is the well-known discrepancy between the theoretical prediction of the muon anomalous magnetic moment amu=(g-2)mu/2 and its experimental value. However, the accuracy of the theoretical prediction is limited by the uncertainty on the Hadronic Leading Order (HLO) contribution amu^HLO. In this regard, the recently proposed MUonE...

120. Firetalks

Alfredo Stanzione, Nicola Losacco

9/28/23, 5:40 PM

1. Low-energy constraints on top quark operators
2. The relevance of Bc in testing the standard model and beyond

34. Flavour Physics: status and prospects

Marzia Bordone (CERN)

9/28/23, 5:55 PM

37. Dark Sectors from Strongly Coupled Theories

Sonali Verma

9/29/23, 9:45 AM

In this talk I will talk about two complementary ways to extend the Standard model and account for a possibly strongly coupled hidden or dark sector. I will highlight the theoretical framework used for both and the phenomenological signals expected and show how the two explore different mass scales – from 100 MeVs to 100 TeVs.

The first half of my talk will envisage the possibility that an...

38. Dark Matter and Gravitational Waves in the 2HDM+a

Giorgio Arcadi

9/29/23, 10:05 AM

We illustrate a comprehensive study of the 2HDM+a coupled with Dark Matter, including constraints from collider and dedicated Dark Matter searches. We also illustrate the outcome analysis of the cosmic phase transitions and the gravitational wave spectrum that are implied by the model and show the prospects for observing the signal of such gravitational waves in near future experiments such as...

39. Mineral Detection of Dark Matter

Patrick Stengel

9/29/23, 10:25 AM

Minerals are solid state nuclear track detectors - nuclear recoils in a mineral leave latent damage to the crystal structure. Depending on the mineral and its temperature, the damage features are retained in the material from minutes to timescales much larger than the age of the Solar System. The damage features from the fission fragments left by spontaneous fission of heavy unstable isotopes...

121. Firetalks

David Cabo Almeida, Stefano Arcari, Stefano Palmisano

9/29/23, 10:45 AM

1. Radiative correction in Dark Matter models and Direct Detection
2. On the verge of the dark: probing ultralight axions effects on structure formation and CMB anisotropies
3. Models of Accidental Dark Matter with a Fundamental Scalar

40. Shear viscosity to entropy density ratio in gravity analogue models

Silvia Trabucco

9/29/23, 11:30 AM

The shear viscosity to entropy density ratio, eta/s, is one of the quantities of central interest in quantum field
theories. Within the AdS/CFT correspondence, it has been conjectured by Kovtun, Son and Starinets that a
universal lower bound 1/4pi exists. We present a new perspective on this matter in the framework of analogue
gravity models, focusing on relativistic fluids with transonic...

124. The recent gravitational wave observation by pulsar timing arrays and primordial black holes

Antonio Junior Iovino

9/29/23, 11:50 AM

The recent data releases by multiple pulsar timing array (PTA) experiments show
evidence for Hellings-Downs angular correlations indicating that the observed
stochastic common spectrum can be interpreted as a stochastic gravitational wave
background. We study whether the signal may originate from gravitational waves
induced by high-amplitude primordial curvature perturbations. Such...

122. Firetalks

Alessandro Granelli, Giorgia Zagatti, Jacopo Nava

9/29/23, 12:10 PM

1. Low-Energy Tests of Leptogenesis Scenarios within the Type-I Seesaw Extension
2. Probing Baryogenesis from Supercooled Confinement
3. Searching for signatures of new physics in the CMB: constraints on cosmic birefringence

42. What cosmology can tell us about neutrinos

Maria Archidiacono (Milano Statale)

9/29/23, 12:25 PM

43. Unveiling dark fifth forces with linear cosmology and LSS

Salvatore Bottaro (Tel Aviv University)

9/29/23, 2:30 PM

We investigate the imprints of new long-range forces mediated by a new light scalar acting solely on dark matter. Dark fifth forces in general will modify the background evolution as well as the growth of density fluctuations. At the linear level, constraints are derived from CMB together with a full-shape analysis of the power spectrum as measured by BOSS. At the non-linear level, the...

45. Axionic Strings, Domain Walls and Baryons via Holography

Andrea Olzi

9/29/23, 2:55 PM

In single-flavor QCD, the low energy description of baryons as Skyrmions is not available. In this case, it has been proposed by Komargodski that baryons can be viewed as kinds of quantum Hall droplets, or “sheets”, charged under the baryon symmetry localized on their boundary.
These objects can be studied in the deconfined phase of holographic QCD. Within this setup, the axion can be...

123. Firetalks

Alessandro Camilletti, Nicola Barbieri, Tommaso Sassi

9/29/23, 3:15 PM

1. Polarized CMB Boltzmann hierarchy from non-standard neutrino interactions
2. Predicting and measuring black hole properties in promptly collapsed binary neutron star mergers
3. Stueckelberg Complex Dark Photon DM

20. Contributed

35. Contributed

41. Dark Sectors from Strongly Coupled Theories

Sonali Verma

In this talk I will talk about two complementary ways to extend the Standard model and account for a possibly strongly coupled hidden or dark sector. I will highlight the theoretical framework used for both and the phenomenological signals expected and show how the two explore different mass scales – from 100 MeVs to 100 TeVs.

The first half of my talk will envisage the possibility that an...

44. The recent gravitational wave observation by pulsar timing arrays and primordial black holes

Antonio Junior Iovino

The recent data releases by multiple pulsar timing array (PTA) experiments show
evidence for Hellings-Downs angular correlations indicating that the observed
stochastic common spectrum can be interpreted as a stochastic gravitational wave
background. We study whether the signal may originate from gravitational waves
induced by high-amplitude primordial curvature perturbations. Such...