Realtime dynamics of hyperon spin correlations from string fragmentation in a deformed four-flavor Schwinger model

• URL: http://arxiv.org/abs/2308.13596v2
• Date: Mon, 26 Feb 2024 13:39:18 GMT
• Title: Realtime dynamics of hyperon spin correlations from string fragmentation in a deformed four-flavor Schwinger model
• Authors: Jo\~ao Barata, Wenjie Gong, Raju Venugopalan
• Abstract summary: Self-polarizing weak decays of $Lambda$-hyperons provide insight into the role of entanglement in QCD strings. We investigate the evolution of these correlations for different string configurations sensitive to the rich structure of the model Hamiltonian.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Self-polarizing weak decays of $\Lambda$-hyperons provide unique insight into the role of entanglement in the fragmentation of QCD strings through measurements of the spin correlations of $\Lambda{\bar \Lambda}$-pairs produced in collider experiments. The simplest quantum field theory representing the underlying parton dynamics is the four-flavor massive Schwinger model plus an effective spin-flip term, where the flavors are mapped to light (up/down) and heavy (strange) quarks and their spins. This construction provides a novel way to explore hyperon spin-correlations in 1+1-dimensions. We investigate the evolution of these correlations for different string configurations that are sensitive to the rich structure of the model Hamiltonian.

Related papers

• Dynamics of a Generalized Dicke Model for Spin-1 Atoms [0.0]
  The Dicke model is a staple of theoretical cavity Quantum Electrodynamics (cavity QED) It demonstrates a rich variety of dynamics such as phase transitions, phase multistability, and chaos. The varied and complex behaviours admitted by the model highlights the need to more rigorously map its dynamics.
  arXiv  Detail & Related papers  (2024-03-04T04:09:35Z)
• Dynamical structure factor and a new method to measure the pairing gap in two-dimensional attractive Fermi-Hubbard model [7.317437085639568]
  We study the dynamical excitations of attractive Fermi-Hubbard model in a two-dimensional square optical lattice. Two kinds of collective modes are investigated, including a Goldstone phonon mode at transferred momentum.
  arXiv  Detail & Related papers  (2023-05-15T06:57:44Z)
• Dilute neutron star matter from neural-network quantum states [58.720142291102135]
  Low-density neutron matter is characterized by the formation of Cooper pairs and the onset of superfluidity. We model this density regime by capitalizing on the expressivity of the hidden-nucleon neural-network quantum states combined with variational Monte Carlo and reconfiguration techniques.
  arXiv  Detail & Related papers  (2022-12-08T17:55:25Z)
• New insights on the quantum-classical division in light of Collapse Models [63.942632088208505]
  We argue that the division between quantum and classical behaviors is analogous to the division of thermodynamic phases. A specific relationship between the collapse parameter $(lambda)$ and the collapse length scale ($r_C$) plays the role of the coexistence curve in usual thermodynamic phase diagrams.
  arXiv  Detail & Related papers  (2022-10-19T14:51:21Z)
• Slow semiclassical dynamics of a two-dimensional Hubbard model in disorder-free potentials [77.34726150561087]
  We show that introduction of harmonic and spin-dependent linear potentials sufficiently validates fTWA for longer times. In particular, we focus on a finite two-dimensional system and show that at intermediate linear potential strength, the addition of a harmonic potential and spin dependence of the tilt, results in subdiffusive dynamics.
  arXiv  Detail & Related papers  (2022-10-03T16:51:25Z)
• Spin-spin coupling-based quantum and classical phase transitions in two-impurity spin-boson models [55.41644538483948]
  Two-interacting-impurity spin-boson models with vanishing transverse fields on the spin-pair are studied. The dynamics of the magnetization is analysed for different levels of (an)isotropy.
  arXiv  Detail & Related papers  (2022-05-19T08:01:03Z)
• Entanglement and correlations in fast collective neutrino flavor oscillations [68.8204255655161]
  Collective neutrino oscillations play a crucial role in transporting lepton flavor in astrophysical settings. We study the full out-of-equilibrium flavor dynamics in simple multi-angle geometries displaying fast oscillations. We present evidence that these fast collective modes are generated by the same dynamical phase transition.
  arXiv  Detail & Related papers  (2022-03-05T17:00:06Z)
• Unification of Random Dynamical Decoupling and the Quantum Zeno Effect [68.8204255655161]
  We show that the system dynamics under random dynamical decoupling converges to a unitary with a decoupling error that characteristically depends on the convergence speed of the Zeno limit. This reveals a unification of the random dynamical decoupling and the quantum Zeno effect.
  arXiv  Detail & Related papers  (2021-12-08T11:41:38Z)
• Dynamics of Spin Helices in the One-Dimensional $XX$ Model [0.0]
  We analytically study the dynamics of spin helices in the one-dimensional $XX$ model. We find a separation of timescales between the in-plane and out-of-plane spin dynamics. One of our key findings is that the spin correlation functions decay as $t-1/2$ at long time, in contrast to the experimentally observed exponential decay.
  arXiv  Detail & Related papers  (2021-10-12T13:03:29Z)
• Engineering infinite-range SU($n$) interactions with spin-orbit-coupled fermions in an optical lattice [0.0]
  We study multilevel fermions in an optical lattice described by the Hubbard model with on site SU($n$)-symmetric interactions. Raman pulses that address internal spin states modify the atomic dispersion relation and induce spin-orbit coupling. Our predictions are readily testable in current experiments with ultracold alkaline-earth(-like) atoms.
  arXiv  Detail & Related papers  (2021-09-22T20:13:20Z)
• Measurement of Bell-type inequalities and quantum entanglement from $\Lambda$-hyperon spin correlations at high energy colliders [0.0]
  Spin correlations of $Lambda$-hyperons embedded in the QCD strings formed in high energy collider experiments provide unique insight into their locality and entanglement features. We show that while the Clauser-Horne-Shimony-Holt inequality is less stringent for such states, they provide a benchmark for quantum-to-classical transitions induced by varying i) the associated hadron, ii) the spin of nucleons,iii) the separation in rapidity between pairs, and iv) the kinematic accessed.
  arXiv  Detail & Related papers  (2021-07-27T18:00:02Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.