Giorgini, L.T. Jentschura, U.D. Malatesta, E.M. Parisi, G. Rizzo, T. Zinn-Justin, J.

For a long time, the predictive limits of perturbative quantum field theory have been limited by our inability to carry out loop calculations to arbitrarily high order, which become increasingly complex as the order of perturbation theory is increased. This problem is exacerbated by the fact that perturbation series derived from loop diagram (Feynm...

Niccoli, G. Pei, H. Terras, V.

We explain how to compute correlation functions at zero temperature within the framework of the quantum version of the Separation of Variables (SoV) in the case of a simple model: the XXX Heisenberg chain of spin 1/2 with twisted (quasi-periodic) boundary conditions. We first detail all steps of our method in the case of anti-periodic boundary cond...

Lauria, Edoardo Liendo, Pedro van Rees, Balt C. Zhao, Xiang

For a single free scalar field in $d \geq 2$ dimensions, almost all the unitary conformal defects must be trivial. The only possible exceptions are monodromy defects in $d \geq 4$ and co-dimension three defects in $d \geq 5$. As an intermediate result we show that the $n$-point correlation functions of a conformal theory with a generalized free spe...

Cimerman, J. Tomášik, B. Plumberg, Ch.
Published in
Physics of Particles and Nuclei

AbstractThe correlation function measured in ultrarelativistic nuclear collisions is non-Gaussian. By making use of models we discuss and assess how much various effects can influence its shape. In particular, we focus on the parametrisations expressed with the help of Lévy-stable distributions. We show that the Lévy index may deviate substantially...

Narison, Stephan

Using the present state of art of the QCD expressions of the two-point correlators, we use QCD Inverse Laplace sum rules (LSR) to study the spectra and decay constants of Bc-like scalar and (axial)-vector mesons. Improved predictions are obtained by combining LSR results with the ones from Heavy Quark Symmetry (HQS). We complete the analysis by pre...

Bertacca, Daniele Ricciardone, Angelo Bellomo, Nicola Jenkins, Alexander C. Matarrese, Sabino Raccanelli, Alvise Regimbau, Tania Sakellariadou, Mairi

The detection and characterization of the Stochastic Gravitational Wave Background (SGWB) is one of the main goals of Gravitational Wave (GW) experiments. The observed SGWB will be the combination of GWs from cosmological (as predicted by many models describing the physics of the early Universe) and astrophysical origins, which will arise from the ...

Adamczewski-Musch, J. Arnold, O. Behnke, C. Belounnas, A. Belyaev, A. Berger-Chen, J.C. Biernat, J. Blanco, A. Blume, C. ̈ohmer, M.B.
...

We present an analysis of proton number fluctuations in $\sqrt{s_{NN}}$ = 2.4 GeV Au+Au collisions measured with the High-Acceptance DiElectron Spectrometer (HADES) at GSI. With the help of extensive detector simulations done with IQMD transport model events including nuclear clusters, various nuisance effects influencing the observed proton cumula...

Kaviraj, Apratim Rychkov, Slava Trevisani, Emilio
Published in
Journal of High Energy Physics

Quenched disorder is very important but notoriously hard. In 1979, Parisi and Sourlas proposed an interesting and powerful conjecture about the infrared fixed points with random field type of disorder: such fixed points should possess an unusual supersymmetry, by which they reduce in two less spatial dimensions to usual non-supersymmetric non- diso...

Henn, Johannes M. Korchemsky, Gregory P. Mistlberger, Bernhard
Published in
Journal of High Energy Physics

We present the complete formula for the cusp anomalous dimension at four loops in QCD and in maximally supersymmetric Yang-Mills. In the latter theory it is given by Γcusp,Aαs4=−αsNπ473π620160+ζ328+1N231π65040+9ζ324.\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy}...

Benedetti, Dario Gurau, Razvan Suzuki, Kenta

We continue the study of the bosonic $O(N)^3$ model with quartic interactions and long-range propagator. The symmetry group allows for three distinct invariant $\phi^4$ composite operators, known as tetrahedron, pillow and double-trace. As shown in arXiv:1903.03578 and arXiv:1909.07767, the tetrahedron operator is exactly marginal in the large-$N$ ...