QCD is the fundamental quantum field theory that describes the strong interactions between particles. It is one of the basic building blocks of the Standard Model of Particle Physics and it is responsible for the formation of nuclear matter. In particular,… Leggi tutto QCD at high temperature plays a crucial role in understanding a large number of physical processes spanning from the cosmological evolution of the early universe to the interpretation of the experimental results of heavy ions collisions. Due to asymptotic freedom, one could hope that a perturbative description of the dynamics of the theory becomes possible in the high temperature regime. However, the behaviour of the theory is strongly non- perturbative even at very high temperatures and the lattice is the only theoretical framework in which a first-principles, non-perturbative study is possible. So far, most of the numerical studies on the lattice are restricted to the low temperature regime (T<2 GeV) due to technical limitations. In the present project we overcome those limitations by using a recent strategy - proposed and developed by our group - based on using shifted boundary conditions along the temporal direction. Despite the novelty, that method has already given interesting results in the calculation of the Equation of State of SU(3) Yang-Mills theory and, more recently, in QCD for the calculation of the mesonic non-singlet screening masses projected onto zero Matsubara frequency. The purpose of the present application is to extend the above calculations studying, for the first time, the non-static sector of the mesonic screening masses and the baryonic one over a wide range of temperatures. These quantities are very interesting observables from the phenomenological point of view, since they encode fundamental properties of the plasma. Moreover, if the unreliability of the perturbative results obtained in the static sector of the mesonic screening masses were confirmed in those new sectors, this will make it clear that the dynamics of the plasma cannot be explained by the knowledge that we have from perturbation theory. We plan to investigate the above mentioned screening masses at 8 different values of temperature, approximately from 3 GeV, up to very high temperature, about 80 GeV. In order to perform the continuum limit extrapolation, we will take into account 4 different values of the lattice spacing. For this reason, we request computational resources for a total of 50 Mch.

Our understanding of Nature depends on our ability to validate, with experiments, theoretical predictions for observable quantities. The Standard Model of particles describes three of the four known fundamental forces in Nature and has been extensively tested at collider experiments over the last… Leggi tutto decades. Strong interactions are one of its components and are characterized by so-called non-perturbative phenomena. Their low-energy contribution to quantities measurable in experiments can be predicted from first principles by discretizing QCD on a four-dimensional lattice and simulate it with Monte Carlo methods on world-class HPC facilities. To test the Standard Model to unprecedented precision the interplay between strong and electromagnetic forces must be considered, and the goal of this project is the prediction of the so-called isospin-breaking corrections for several phenomenologically relevant quantities, from first principles Lattice QCD+QED simulations. The primary focus is on the anomalous magnetic moment of the muon, a promising candidate for unveiling new fundamental phenomena beyond our current understanding, but this project opens the door to the precise assessment of isospin-breaking effects also in hadronic tau decays or meson leptonic decays.

The Standard Model of Particle Physics (SM) explains almost all results of all experiments conducted in laboratories on a huge variety of processes in the electroweak and strong interaction sectors. However, it is widely accepted that the SM cannot be the ultimate… Leggi tutto theory of fundamental interactions because it provides no explanation for several phenomena in Nature. The experimental measurement of the muon anomalous magnetic moment �µ currently shows a discrepancy of about 4 standard deviations from the theoretical expectations of the SM. The largest contribution to the theoretical uncertainty comes from the Hadron Vacuum Polarization (HVP) whose first principles, non-perturbative computation can be performed only by Monte Carlo simulations of lattice QCD. However, state of the art techniques have difficulty to further increase the numerical accuracy, which could only be achieved with unfeasibly large amounts of computer time. This project aims at measuring the HVP with an unprecedented precision, exploiting an innovative and very powerful multi-level algorithm. We expect that our method will become the standard for Monte Carlo studies of correlations functions in lattice QCD; the outcomes of this study will enable a lattice QCD determination of HVP to impact the SM prediction for �µ for the first time

Quantum Chromodynamics (QCD) is the fundamental field theory governing the strong interactions among particles. Understanding its non-perturbative dynamics from first principles necessitates numerical simulations on the lattice. This project seeks to measure the mesonic non-singlet screening masses projected onto the first… Leggi tutto non-zero Matsubara frequency across a previously-unexplored temperature range, from 1 GeV to 160 GeV, with sub-percent accuracy in the continuum limit. Besides its intrinsic physics significance, this endeavour will offer additional insights into the reliability of next-to-leading order perturbation theory up to the electroweak scale. In this initiative, we use the formulation of a thermal quantum theory in a moving reference frame. This approach has been extensively employed in recent publications that are setting the standard for Monte Carlo studies at very high temperatures. The outcomes of this study will illuminate various properties of the quark-gluon plasma. It expands the work of some of us on the static sector of mesonic screening masses [1] and the ongoing work on baryonic screening masses. Together with these works it will broaden our understanding of the hadronic screening spectrum in the high-temperature realm of QCD.

Quantum Chromodynamics (QCD) is the fundamental quantum field theory that describes the strong interactions between particles. Its non- perturbative dynamics can be investigated from first principles only by numerical simulations on the lattice. The behaviour of the theory is unknown for temperatures… Leggi tutto above 1-2 GeV due to numerical challenges. This proposal continues a previous one (ID: 2018194651) where, using the theoretical framework based on the formulation of a thermal quantum theory in a moving frame, we are able to explore for the first time and with the accuracy of about 1-2% the thermal properties of QCD up to the Electro-Weak scale. In particular we focus on the Equation of State at zero chemical potential. The present project aims at calculating the renormalization constants of the energy-momentum tensor, concluding the computation started with 2018194651. The data we have collected show that our new method is, by far, more efficient than the state of the art and it will become the standard. The final result of the two parts of the project will be a milestone in the knowledge of the quark-gluon phase of QCD, and it will be of the utmost importance for studying and modeling the evolution of the Early Universe.

Exploring the standard model of particle physics and finding new physics beyond is in many cases limited by the lack of high-precision knowledge of low-energy QCD effects. The only known systematically improvable method to compute such effects from first principles is lattice… Leggi tutto QCD. For crucial topics such as the muon g-2, heavy-quark flavour physics, and the study of structure functions, the systematic uncertainty associated with the continuum limit of lattice QCD poses one of the most difficult challenges. For the muon g-2 uncertainties associated with finite simulation volume are also crucial. Building on our successful project last year, we propose to generate the finest-yet dynamical lattice QCD gauge ensemble using chiral symmetric domain wall fermions at physical pion mass, the first Nf=2+1+1 domain-wall ensemble at physical pion mass, as well as a g- 2 program in an 11fm box at physical pion mass. This effort is only possible using the scale of resources made available in the EuroHPC JU Extreme Scale Access call. The results of this proposal will have immediate impact on a high-precision calculation of the hadronic vacuum polarization contribution to clarify emerging tensions for the muon g-2 and have long-term benefits for a wide range of crucial observables.

One of the most promising directions in contemporary drug discovery research is based on targeting non-native proteins conformations (e.g. so–called cryptic pockets). In particular, authors involved in this proposal have been involved in conceiving and developing a novel paradigm called PPI-FIT (defined below),… Leggi tutto which is based on hindering the folding of the target protein. This approach led to the discovery of SM875, a small molecule capable of selectively reducing the cellular levels of the human prion protein (PrP), the substrate of prions, infectious protein aggregates involved in several fatal incurable neurodegenerative diseases. A crucial piece of information required in the hit-to-lead optimization of cryptic pocket drug candidates (including SM875) is the atomic resolution of the structure of the binding pose. In conventional drug discovery efforts, this information could is obtained by X-ray crystallography or NMR experiments. Unfortunately, these techniques cannot provide the structure of unstable protein conformers, even when they are stabilized by the interaction with a small molecule, like SM875 does for PrP, because of their high aggregation propensity. Several recent studies have highlighted the unique advantage of performing protein crystallization in microgravity conditions1. The primary goal of this proposal is to define a roadmap to further develop such a space-based technology to achieve the crystallization of protein non-native conformers, by assaying different experimental protocols. Our experimental setup will be first tested in a pioneering experiment, included in the upcoming SpX27 space mission. The goal of the present proposal is to capitalize on the preliminary results generated by this first mission to further develop this technology, leading to a stable, scalable, and versatile protocol for crystallizing non-native protein conformers in microgravity conditions.

This project makes use of a novel approach for numerical lattice simulations of the strong nuclear force. Such simulations support an extensive experimental program in the search for new physics, and, as these searches continue, increased precision is required. Our approach… Leggi tutto of master field simulations enables larger volumes and finer lattice spacings, crucial for next-generation precision. The novelty is to employ a smaller number of significantly larger-volume quantum gauge fields, using spatial averaging of local observables. Accumulating statistics in this manner circumvents the infamous topology-freezing problem of conventional simulations and can further reduce the critical slowing down of algorithms near the continuum limit. With the 120 Mch requested here, we will generate data needed for the first master field calculations with varying lattice spacing. The fields will enable us to calculate the neutron electric dipole moment, charm-to-light semileptonic decays, and the inclusive rate R(e^+ e^- !’hadrons), each of which profit from the master field approach and are of direct importance for new physics searches. The approach is uniquely suited to exploit the full potential of large-scale HPC facilities as the huge problem size allows for tuning of the computational density to mask network communication and achieve excellent scaling performance.

The MiSS project targets transformative progress in the emerging field of distributed quantum sensing exploiting multi-mode microwave squeezing. The final goal is to realise a robust and scalable technology for microwave squeezing and generation of nonclassical microwave radiation based on superconducting… Leggi tutto (meta)materials. The three specific objectives of the MiSS project are: 1) Technological innovation, investigating new material and scalable microfabrication approaches to optimise the building blocks to produce Travelling Wave Parametric Amplifiers-based squeezers; 2) Metrology protocols, developing dedicated cryogenic measurement protocols to accurately evaluate the radiation quantumness, opening the way to standardisation; 3) Realisation of a prototype for real world applications, developing a system with scalability potential for distributed quantum sensing in the microwave regime. A use-case dedicated to multi-parameter sensing for material characterisation will be targeted. The outcomes of this project will pave the way towards real exploitation of quantum-enhanced sensing techniques in the microwave regime. The MiSS consortium brings together a unique set of expertise in design, materials, metrology, fabrication, cryogenic characterisation and commercialisation to be able to deliver on this ambitious goal.