Dennis Bonatsos, Andriana Martinou, S. K. Peroulis, T. J. Mertzimekis, N. Minkov
{"title":"Seven years of the proxy-SU(3) shell model symmetry","authors":"Dennis Bonatsos, Andriana Martinou, S. K. Peroulis, T. J. Mertzimekis, N. Minkov","doi":"arxiv-2409.04357","DOIUrl":"https://doi.org/arxiv-2409.04357","url":null,"abstract":"The proxy-SU(3) symmetry was first presented in HINPw4 in Ioannina in\u0000May2017, justified within the Nilsson model and applied to parameter-free\u0000predictions of the collective variables beta and gamma in medium-mass and heavy\u0000nuclei. Major steps forward, including the connection of the proxy-SU(3)\u0000symmetry to the shell model, the justification of the dominance of highest\u0000weight states in terms of the short range nature of the nucleon-nucleon\u0000interaction, as well as the first proposal of appearance of islands of shape\u0000coexistence on the nuclear chart, have been presented in HINPw6 in Athens in\u0000May 2021. The recently hot topic of the prevalence of triaxial shapes in heavy\u0000nuclei will also be briefly outlined in the proxy-SU(3) framework.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"203 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Sensitivity of jet quenching to the initial state in heavy-ion collisions","authors":"Souvik Priyam Adhya, Konrad Tywoniuk","doi":"arxiv-2409.04295","DOIUrl":"https://doi.org/arxiv-2409.04295","url":null,"abstract":"In heavy-ion collisions, nuclear matter is subjected to extreme conditions in\u0000a highly dynamical, rapidly evolving environment. This poses a tremendous\u0000challenge for calculating jet quenching observables. Current approaches rely on\u0000analytical results for static cases, introducing theoretical uncertainties and\u0000biases in our understanding of the pre-equilibrated medium. To address this\u0000issue, we employ resummation schemes to derive analytical rates for radiative\u0000energy loss in generic, evolving backgrounds. We investigate regimes where rare\u0000scattering and multiple scattering with the dynamical medium occurs, and\u0000extract relevant scales governing the in-medium emission rate of soft gluons.\u0000Our analysis indicates that strong jet quenching is only possible when the\u0000equilibration time of the medium is longer than its mean free path,\u0000highlighting the importance of medium modifications of jets in the earliest\u0000stages of heavy-ion collisions. We also demonstrate analytically that a medium\u0000evolution, which initially has a small coupling to jets, typically leads to a\u0000stronger jet azimuthal asymmetry at the same jet suppression factor.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Weak decays in superheavy nuclei","authors":"A. Ravlić, W. Nazarewicz","doi":"arxiv-2409.04620","DOIUrl":"https://doi.org/arxiv-2409.04620","url":null,"abstract":"Superheavy nuclei represent the heaviest atoms and nuclides known at the\u0000limit of mass and charge. The observed superheavy nuclei are all proton-rich;\u0000they decay primarily by emitting $alpha$ particles and fission, with a\u0000possible small electron capture (EC) branch. Due to the huge atomic numbers and\u0000associated relativistic effects, EC-decays of superheavy systems are expected\u0000to differ from what is known in lighter nuclei. In this paper, using the\u0000quantified relativistic nuclear density functional theory and the quasiparticle\u0000random-phase approximation with the interaction optimized to experimental\u0000$beta^-$-decay half-lives and Gamow-Teller resonance energies, we study the\u0000EC/$beta^pm$-decays in $Z = 101-118$ nuclei. Both allowed ($1^+$) and\u0000first-forbidden ($0^-, 1^-$ and $2^-$) transitions are considered. We show that\u0000the first-forbidden $1^-$ transitions dominate the decay rates in almost all\u0000studied nuclei. For proton-rich nuclei, EC dominates over $beta^+$ decay. We\u0000identify 44 nuclei with EC/$beta^+$ branching ratio larger than 5%,\u0000indicating a possible competition with $alpha$-decay and spontaneous fission\u0000channels.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vincent Cheung, Zhong-Bo Kang, Farid Salazar, Ramona Vogt
{"title":"Direct quarkonium production in DIS from a joint CGC and NRQCD framework","authors":"Vincent Cheung, Zhong-Bo Kang, Farid Salazar, Ramona Vogt","doi":"arxiv-2409.04080","DOIUrl":"https://doi.org/arxiv-2409.04080","url":null,"abstract":"We compute the differential cross section for direct quarkonium production in\u0000high-energy electron-nucleus collisions at small $x$. Our computation is\u0000performed within the nonrelativistic QCD factorization formalism that separates\u0000the calculation into short distance coefficients and long distance matrix\u0000elements that depend on the color and spin of the state. We obtain the short\u0000distance coefficients of the production of the heavy quark pair within the\u0000framework of the Color Glass Condensate effective field theory, which resums\u0000coherent multiple interactions of the heavy quark pair with the nucleus to all\u0000orders. Our results are expressed as the convolution of perturbatively\u0000calculable perturbative functions with multi-point light-like Wilson line\u0000correlators. In the correlation limit, we establish the correspondence between\u0000our CGC formulation with calculations employing the transverse momentum\u0000dependent (TMD) framework. We extend this correspondence by resumming kinematic\u0000power corrections within the improved TMD framework, which interpolates between\u0000the TMD formalism and $k_perp$ factorization formalism. We present a detailed\u0000numerical analysis, focusing on $J/psi$ production in the kinematics\u0000accessible at the future Electron-Ion Collider, highlighting the importance of\u0000genuine higher-order saturation contributions when the electron collides with a\u0000large nucleus.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Axel Pérez-Obiol, Sergi Masot-Llima, Antonio M. Romero, Javier Menéndez, Arnau Rios, Artur García-Sáez, Bruno Juliá-Díaz
{"title":"Entropy-driven entanglement forging","authors":"Axel Pérez-Obiol, Sergi Masot-Llima, Antonio M. Romero, Javier Menéndez, Arnau Rios, Artur García-Sáez, Bruno Juliá-Díaz","doi":"arxiv-2409.04510","DOIUrl":"https://doi.org/arxiv-2409.04510","url":null,"abstract":"Simulating a physical system with variational quantum algorithms is a\u0000well-studied approach but challenging to implement in current devices due to\u0000demands in qubit number and circuit depth. We show how limited knowledge of the\u0000system, namely the entropy of its subsystems or its entanglement structure, can\u0000be used to reduce the cost of these algorithms with entanglement forging. To do\u0000so, we simulate a Fermi-Hubbard one-dimensional chain with a parametrized\u0000hopping term, as well as atomic nuclei ${}^{28}$Ne and ${}^{60}$Ti with the\u0000nuclear shell model. Using an adaptive variational quantum eigensolver we find\u0000significant reductions in both the maximum number of qubits (up to one fourth)\u0000and the amount of two-qubit gates (over an order of magnitude) required in the\u0000quantum circuits. Our findings indicate that our method, entropy-driven\u0000entanglement forging, can be used to adjust quantum simulations to the\u0000limitations of current noisy intermediate-scale quantum devices.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anna Chen, Juan Diego DelPrado, Thomas W. Baumgarte, Stuart L. Shapiro
{"title":"Constraining the nuclear equation of state from orbits of primordial black holes inside neutron stars","authors":"Anna Chen, Juan Diego DelPrado, Thomas W. Baumgarte, Stuart L. Shapiro","doi":"arxiv-2409.04526","DOIUrl":"https://doi.org/arxiv-2409.04526","url":null,"abstract":"Lacking terrestrial experimental data, our best constraints on the behavior\u0000of matter at high densities up to and above nuclear density arise from\u0000observations of neutron stars. Current constraints include those based on\u0000measurements of stellar masses, radii, and tidal deformabilities. Here we\u0000explore how orbits of primordial black holes - should they exist - inside\u0000neutron stars could provide complementary constraints on the nuclear equation\u0000of state (EOS). Specifically, we consider a sample of candidate EOSs, construct\u0000neutron star models for these EOSs, and compute orbits of primordial black\u0000holes inside these stars. We discuss how the pericenter advance of eccentric\u0000orbits, i.e. orbital precession, results in beat phenomena in the emitted\u0000gravitational wave signal. Observing this beat frequency could constrain the\u0000nuclear EOS and break possible degeneracies arising from other constraints, as\u0000well as provide information about the host star.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Martha Ege, Justin Mohs, Jan Staudenmaier, Hannah Elfner
{"title":"Deuteron, triton, helium-3 and hypertriton production in relativistic heavy-ion collisions via stochastic multi-particle reactions","authors":"Martha Ege, Justin Mohs, Jan Staudenmaier, Hannah Elfner","doi":"arxiv-2409.04209","DOIUrl":"https://doi.org/arxiv-2409.04209","url":null,"abstract":"The production of light nuclei in heavy -ion collisions is an excellent probe\u0000for studying the phase diagram of quantum chromodynamics and for the search of\u0000a critical end point. In this work we apply a hybrid approach in which we study\u0000the light nuclei production in the afterburner stage of central Au+Au\u0000collisions at $sqrt{s}_{NN}=7.7$, 14.5 and 19.6 GeV. In this stage, light\u0000nuclei are produced dynamically in $4leftrightarrow 2$ catalysis reactions. A\u0000comparison of the dynamic production and a coalescence approach is presented\u0000for transverse momentum spectra of deuterons, tritons, $^3rm He$ nuclei and\u0000hypertritons and ratios of light nuclei yields. A good agreement with the\u0000experimentally measured yield of nuclei is found and we proceed to further\u0000investigate the production mechanisms of light nuclei by calculating the rates\u0000of the important channels for the formation and disintegration. We find that\u0000the afterburner stage is essential for the description of light nuclei\u0000formation in heavy-ion collisions, as light nuclei undergo a large number of\u0000interactions.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Li, N. Sparveris, H. Atac, M. K. Jones, M. Paolone, Z. Akbar, M. Ali, C. Ayerbe Gayoso, V. Berdnikov, D. Biswas, M. Boer, A. Camsonne, J. -P. Chen, M. Diefenthaler, B. Duran, D. Dutta, D. Gaskell, O. Hansen, F. Hauenstein, N. Heinrich, W. Henry, T. Horn, G. M. Huber, S. Jia, S. Joosten, A. Karki, S. J. D. Kay, V. Kumar, X. Li, W. B. Li, A. H. Liyanage, D. Mack, S. Malace, P. Markowitz, M. McCaughan, Z. -E. Meziani, H. Mkrtchyan, C. Morean, M. Muhoza, A. Narayan, B. Pasquini, M. Rehfuss, B. Sawatzky, G. R. Smith, A. Smith, R. Trotta, C. Yero, X. Zheng, J. Zhou
{"title":"Pion electroproduction measurements in the nucleon resonance region","authors":"R. Li, N. Sparveris, H. Atac, M. K. Jones, M. Paolone, Z. Akbar, M. Ali, C. Ayerbe Gayoso, V. Berdnikov, D. Biswas, M. Boer, A. Camsonne, J. -P. Chen, M. Diefenthaler, B. Duran, D. Dutta, D. Gaskell, O. Hansen, F. Hauenstein, N. Heinrich, W. Henry, T. Horn, G. M. Huber, S. Jia, S. Joosten, A. Karki, S. J. D. Kay, V. Kumar, X. Li, W. B. Li, A. H. Liyanage, D. Mack, S. Malace, P. Markowitz, M. McCaughan, Z. -E. Meziani, H. Mkrtchyan, C. Morean, M. Muhoza, A. Narayan, B. Pasquini, M. Rehfuss, B. Sawatzky, G. R. Smith, A. Smith, R. Trotta, C. Yero, X. Zheng, J. Zhou","doi":"arxiv-2409.03750","DOIUrl":"https://doi.org/arxiv-2409.03750","url":null,"abstract":"We report new pion electroproduction measurements in the $Delta(1232)$\u0000resonance, utilizing the SHMS - HMS magnetic spectrometers of Hall C at\u0000Jefferson Lab. The data focus on a region that exhibits a strong and rapidly\u0000changing interplay of the mesonic cloud and quark-gluon dynamics in the\u0000nucleon. The results are in reasonable agreement with models that employ pion\u0000cloud effects and chiral effective field theory calculations, but at the same\u0000time they suggest that an improvement is required to the theoretical\u0000calculations and provide valuable input that will allow their refinements. The\u0000data illustrate the potential of the magnetic spectrometers setup in Hall C\u0000towards the study the $Delta(1232)$ resonance. These first reported results\u0000will be followed by a series of measurements in Hall C, that will expand the\u0000studies of the $Delta(1232)$ resonance offering a high precision insight\u0000within a wide kinematic range from low to high momentum transfers.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Robust ab initio predictions for dimensionless ratios of E2 and radius observables. I. Electric quadrupole moments and deformation","authors":"Mark A. Caprio, Pieter Maris","doi":"arxiv-2409.03926","DOIUrl":"https://doi.org/arxiv-2409.03926","url":null,"abstract":"Converged results for E2 observables are notoriously challenging to obtain in\u0000ab initio no-core configuration interaction (NCCI) approaches. Matrix elements\u0000of the E2 operator are sensitive to the large-distance tails of the nuclear\u0000wave function, which converge slowly in an oscillator basis expansion. Similar\u0000convergence challenges beset ab initio prediction of the nuclear charge radius.\u0000However, we exploit systematic correlations between the calculated E2 and\u0000radius observables to yield meaningful predictions for relations among these\u0000observables. In particular, we examine ab initio predictions for dimensionless\u0000ratios of the form Q/r^2, for nuclei throughout the $p$ shell. Meaningful\u0000predictions for electric quadrupole moments may then be made by calibrating to\u0000the ground-state charge radius, if experimentally known, or vice versa.\u0000Moreover, these dimensionless ratios provide ab initio insight into the nuclear\u0000quadrupole deformation.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"490 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Relaxation times for disoriented isospin condensates in high energy heavy ion collisions","authors":"Olivia Chabowski, Joseph I. Kapusta, Mayank Singh","doi":"arxiv-2409.03711","DOIUrl":"https://doi.org/arxiv-2409.03711","url":null,"abstract":"Fluctuations between charged and neutral kaons measured by the ALICE\u0000Collaboration in Pb-Pb collisions at the LHC exceed conventional explanations.\u0000Previously it was shown that if the scalar condensate is accompanied by an\u0000electrically neutral isospin--1 field then the combination can produce large\u0000equilibrium fluctuations where $langle bar{u}urangle ne langle\u0000bar{d}drangle$. Hadronizing strange and anti-strange quarks might then\u0000strongly fluctuate between charged ($ubar{s}$ or $sbar{u}$) and neutral\u0000($dbar{s}$ or $sbar{d}$) kaons. Here we estimate the times for the\u0000condensates to achieve their equilibrium probability distributions within\u0000causal volumes in high energy heavy ion collisions. This is achieved by\u0000modeling the temperature dependence of the condensates, mesonic collective\u0000excitations, decay rates of the associated fields, and employing the Langevin\u0000and Fokker-Planck equations. We find that the equilibration times are short\u0000compared with the expansion time, and therefore disoriented isospin condensates\u0000are a viable explanation for the anomalous fluctuations observed at the LHC.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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