Quasifragmentation functions in the massive Schwinger model
Jun 3, 20243 pages
Published in:
- Phys.Rev.D 110 (2024) 11, 116009
- Published: Dec 1, 2024
e-Print:
- 2406.01891 [hep-ph]
DOI:
- 10.1103/PhysRevD.110.116009 (publication)
View in:
Citations per year
Abstract: (APS)
We introduce the concept of the quark quasifragmentation function (qFF) using an equal-time and spatially boosted form of the Collins-Soper fragmentation function where the out-meson fragment is replaced by the current asymptotic condition. We derive the qFF for a fermion in two-dimensional quantum electrodynamics (QED2) using the Kogut-Susskind Hamiltonian after a mapping onto spin qubits in a spatial lattice with open boundary conditions. This form is suitable for quantum computations. We compute the qFF by exact diagonalization of the spin Hamiltonian. The results are compared to the qFF following from the Drell-Levy-Yan result for QED2, both at strong and weak coupling, and to two-dimensional quantum chromodynamics in the lowest Fock approximation.Note:
- 10+3 pages; 7+2 figures; v2: matches version published in PRD; title change to conform with APS conventions
- dimension: 2
- qubit: spin
- Schwinger model: massive
- computer: quantum
- Hamiltonian
- quantum chromodynamics
- quantum electrodynamics
- weak coupling
- strong coupling
- quark: fragmentation function
References(70)
Figures(16)
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