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| Hauptseite > Publikationsdatenbank > P-wave two-particle bound and scattering states in a finite volume including QED > print |
| Hauptseite > Publikationsdatenbank > P-wave two-particle bound and scattering states in a finite volume including QED > print |
| 001 | 890686 | ||
| 005 | 20230111074329.0 | ||
| 024 | 7 | _ | |a 10.1140/epja/s10050-020-00319-1 |2 doi |
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| 037 | _ | _ | |a FZJ-2021-01128 |
| 082 | _ | _ | |a 530 |
| 100 | 1 | _ | |a Stellin, Gianluca |0 0000-0003-1711-6790 |b 0 |e Corresponding author |
| 245 | _ | _ | |a P-wave two-particle bound and scattering states in a finite volume including QED |
| 260 | _ | _ | |a Heidelberg |c 2021 |b Springer |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a The mass shifts for two-fermion bound and scattering P-wave states subject to the long-range interactions due to QED in the non-relativistic regime are derived. Introducing a short range force coupling the spinless fermions to one unit of angular momentum in the framework of pionless EFT, we first calculate both perturbatively and non-perturbatively the Coulomb corrections to fermion-fermion scattering in the continuum and infinite volume context. Motivated by the research on particle-antiparticle bound states, we extend the results to fermions of identical mass and opposite charge. Second, we transpose the system onto a cubic lattice with periodic boundary conditions and we calculate the finite volume corrections to the energy of the lowest bound and unbound $T^±_1$ eigenstates. In particular, power law corrections proportional to the fine structure constant and resembling the recent results for S-wave states are found. Higher order contributions in $α$ are neglected, since the gapped nature of the momentum operator in the lattice environnement allows for a perturbative treatment of the QED interactions. |
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| 700 | 1 | _ | |a Meißner, Ulf-G. |0 P:(DE-Juel1)131252 |b 1 |
| 773 | _ | _ | |a 10.1140/epja/s10050-020-00319-1 |g Vol. 57, no. 1, p. 26 |0 PERI:(DE-600)1459066-9 |n 1 |p 26 |t The European physical journal / A |v 57 |y 2021 |x 1434-601X |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/890686/files/Stellin-Mei%C3%9Fner2021_Article_P-waveTwo-particleBoundAndScat.pdf |y OpenAccess |
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