Abstract Recent theoretical developments in the description of jet evolution quark gluon plasma have allowed to account for effects hydrodynamic gradients medium modified spectra. These constitute a crucial step towards using jets as tomographic probes nuclear matter they traverse. In this work, we complement these studies by providing leading order calculations widely studied observables, taking into anisotropies. We show that energy distribution inside is pushed direction largest...

Self-polarizing weak decays of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi mathvariant="normal">Λ</a:mi></a:math>-hyperons provide unique insight into the role entanglement in fragmentation QCD strings through measurements spin correlations <d:math xmlns:d="http://www.w3.org/1998/Math/MathML" display="inline"><d:mi mathvariant="normal">Λ</d:mi><d:mover accent="true"><d:mi mathvariant="normal">Λ</d:mi><d:mo stretchy="false">¯</d:mo></d:mover></d:math> pairs...

Motivated by the parton picture of high-energy quantum chromodynamics, we develop a single-particle digitization strategy for efficient simulation relativistic scattering processes in $d+1$-dimensional scalar ${\ensuremath{\phi}}^{4}$ field theory. We work out algorithms initial state preparation, time evolution, and final measurements. outline nonperturbative renormalization this framework.

In this work, we study the jet momentum broadening in an inhomogeneous dense QCD medium. The transverse profile of nuclear matter is described within a gradient expansion, and focus on leading contributions. parton allowed to interact multiple times with background through soft gluon exchanges. We derive associated final particle distribution using both GLV opacity series BDMPS-Z formalism. further discuss modified factorization process initial partons produced hard scattering, as well its...

We study gradient corrections to the transport equation for energetic light partons in dense QCD environments. In diffusion limit, dynamics is solely controlled by small-angle elastic scatterings, leading transverse momentum broadening with respect parton's initial direction. Such a parton propagation usually considered limit of transversely homogeneous matter. The processes admit classical description and spatial dependence medium properties emerges only through jet quenching parameter....

We calculate the spectrum of gluons sourced by branching an energetic quark in presence inhomogeneous QCD medium, focusing on soft radiation limit. take into account multiple interactions between partons and matter, treating transverse variations its parameters within a gradient expansion. Thus, we derive general form medium induced up to first order gradients, consider simplifying limits. In particular, show that leading matter gradients using harmonic approximation for scattering...

A bstract We investigate the collinear limit of energy-energy correlator (EEC) in a heavy-ion context. First, we revisit leading-logarithmic (LL) resummation this observable vacuum following diagrammatic approach. argue that route allows to naturally incorporate medium-induced effects into all-orders structure systematically. As an example, show how phase-space constraints imposed by static medium on vacuum-like emissions can be incorporated LL result modifying anomalous dimensions. On...

A bstract When an energetic parton propagates in a hot and dense QCD medium it loses energy by elastic scatterings or medium-induced gluon radiation. The radiation spectrum is suppressed at high frequency due to the LPM effect encompasses two regimes that are known analytically: frequencies $$ \omega &gt;{\omega}_c=\hat{q}{L}^2 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>ω</mml:mi> <mml:mo>&gt;</mml:mo> <mml:msub> <mml:mi>c</mml:mi> </mml:msub> <mml:mo>=</mml:mo>...

We reconsider the problem of transverse momentum broadening a highly-energetic parton suffering multiple scatterings in dense colored media, such as thermal Quark-Gluon plasma or large nuclei. In framework Moli\`ere's theory scattering we re-derive simple analytic formula, to be used jet quenching phenomenology, that accounts for both soft and hard Rutherford regimes. Further, discuss sensitivity modeling non-perturbative infrared sector by presenting detailed numerical comparison between...

A bstract We calculate the fully differential medium-induced radiative spectrum at next-to-leading order (NLO) accuracy within Improved Opacity Expansion (IOE) framework. This scheme allows us to gain analytical control of low and high gluon frequencies simultaneously. The frequency regime can be obtained in standard opacity expansion framework which resulting power series diverges characteristic ω c ∼ $$ \hat{q} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mover>...

QCD jets provide one of the best avenues to extract information about quark-gluon plasma produced in aftermath ultrarelativistic heavy-ion collisions. The structure jets, determined by multiparticle quantum interference, is hard tackle using perturbative methods. When evolve a medium this interference pattern modified, adding another layer complexity. By taking advantage recent developments technologies, such effects might be better understood via direct simulation jet evolution. In work, we...

Jets provide one of the primary probes quark-gluon plasma produced in ultrarelativistic heavy ion collisions and cold nuclear matter explored deep inelastic scattering experiments. However, despite important developments last years, a description real-time evolution QCD jets inside medium is still far from being complete. In our previous work, we have quantum technologies as promising alternative theoretical laboratory to simulate jet matter, overcome inherent technical difficulties present...

In recent years, there has been an effort towards establishing a more complete picture for jet substructure in the presence of quark gluon plasma. Such program requires not only detailed description medium induced effects, but also design novel observables. Very recently, it noticed that Energy correlators (EECs) might provide one type such Although full extent their sensitivity to completely explored, they are capable resolve transverse structure jet. particular, sensitive critical angle...

We study the modifications to fragmentation pattern of partons into charged particles in presence a hot and dense quark gluon plasma. To this end, we analyze perturbative renormalization group equations track functions, which describe energy fraction carried by hadrons. Focusing on pure Yang-Mills theory, compute lowest-order moments medium-modified are found be sensitive reduced phase space for emissions medium loss. use extracted calculate correlator (EEC) tracks collinear limit. The EEC...

A bstract Hadronic vacuum polarization (HVP) and light-by-light scattering (HLBL) are crucial for evaluating the Standard Model predictions concerning muon’s anomalous magnetic moment. However, direct first-principle lattice gauge theory-based calculations of these observables in timelike region remain challenging. Discrepancies persist between quantum chromodynamics (QCD) spacelike dispersive approaches relying on experimental data parametrization from region. Here, we introduce a...

We perform a numerical study of non-local partonic transport in anisotropic QCD matter, relevant to the evolution hard probes aftermath high-energy nuclear scattering events. The recently derived master equation, obtained from QFT considerations, differs Boltzmann by incorporating elastic kernel arising density gradients. After rewriting equation form suitable for implementation and assuming static profile, we compare transport, demonstrating that new interaction is essential accurately...

Motivated by recent developments in the application of light-ray operators (LROs) high energy physics, we propose a new strategy to study correlation functions LROs through real-time quantum simulations. We argue that simulators provide an ideal laboratory explore properties lower-dimensional field theories. This is exemplified <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mn>1</a:mn><a:mo>+</a:mo><a:mn>1</a:mn></a:mrow></a:math>-d Schwinger model,...

A bstract QCD jets produced in heavy-ion collisions at LHC or RHIC energies partially evolve inside the hot and dense quark gluon plasma, offering unique opportunities to study splitting processes different backgrounds. Induced (modified) splittings are expected be most relevant mechanism driving modifications of in-medium compared vacuum for a wide sets observables. Although color coherence among emitters has been identified as an essential studies antenna radiation , it is usually...

We study the time evolution of density matrix a high energy quark propagating in dense QCD medium where it undergoes elastic collisions (radiation is ignored present study). The modeled as stochastic color field with Gaussian correlation function. This allows us to eliminate degrees freedom and obtain simple master equation for reduced quark, making use approximations that are familiar description open quantum systems. solved analytically, we demonstrate its solution can be reconstructed...

Abstract Jet quenching, the modification of properties a QCD jet when parton cascade takes place inside medium, is an intrinsically quantum process, where color coherence effects play essential role. Despite very significant progress in last years, simulation full medium induced remains inaccessible to classical Monte Carlo showers. In this situation, alternative formulations are worth being tried and fast developments computing provide promising direction. The goal paper introduce strategy...

Inspired by the recent considerations of parton momentum broadening in glasma phase, we study medium-induced soft gluon radiation jet partons at early times heavy-ion collisions. The state is assumed to be comprised independent color domains with homogenous longitudinal fields that vary event event, and further complete this model an event-averaging procedure accounting for finite correlation length. Using description, evaluate rate from energetic midrapidity phase. We mainly focus on SU(2)...

Hadronic vacuum polarization (HVP) and light-by-light scattering (HLBL) are crucial for evaluating the Standard Model predictions concerning muon's anomalous magnetic moment. However, direct first-principle lattice gauge theory-based calculations of these observables in timelike region remain challenging. Discrepancies persist between quantum chromodynamics (QCD) spacelike dispersive approaches relying on experimental data parametrization from region. Here, we introduce a methodology...

A bstract We study the production of a quark-antiquark antenna in presence dense and anisotropic QCD medium. assume to originate from an unpolarized gluon state, consider both massless massive final states. The medium anisotropy is captured by allowing jet quenching coefficient take different magnitudes orthogonal directions with respect axis. find that particle distribution sensitive anisotropy, more importantly, this effect couples directly helicity/spin propose look into these effects...

We study the time evolution of density matrix a high energy quark in presence dense QCD background that is modeled as stochastic Gaussian color field. At late times, we find only singlet component quark’s reduced survives in-medium and becomes asymptotically diagonal both transverse position momentum spaces. In addition, observe an accelerated entropy growth due to larger phase space being explored by quantum classical entropies converge at times. further state loses all memory initial...

We provide practical simulation methods for scalar field theories on a quantum computer that yield improved asymptotics as well concrete gate estimates the and physical qubit using surface code. achieve these improvements through two optimizations. First, we consider different approach estimating elements of S-matrix. This is appropriate in general 1+1D certain low-energy elastic collisions higher dimensions. Second, implement our series fault-tolerant algorithms Hamiltonians formulated both...