| Title | Effective angular momentum operators in NRQED and matching at one-loop order |
| Authors | Chen, Panying Ji, Xiangdong Zhang, Yue |
| Affiliation | Univ Maryland, Dept Phys, Maryland Ctr Fundamental Phys, College Pk, MD 20742 USA. Shanghai Jiao Tong Univ, INPAC, Dept Phys, Shanghai 200240, Peoples R China. Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China. Peking Univ, Inst Theoret Phys, Beijing 100871, Peoples R China. Abdus Salam Int Ctr Theoret Phys, I-34100 Trieste, Italy. |
| Keywords | NLO Computations Electromagnetic Processes and Properties Space-Time Symmetries SPIN ASYMMETRY POTENTIAL NRQCD FIELD-THEORIES HYDROGEN-ATOM SCATTERING PROTON NUCLEON PHOTOPRODUCTION QCD G1 |
| Issue Date | 2011 |
| Publisher | journal of high energy physics |
| Citation | JOURNAL OF HIGH ENERGY PHYSICS.2011,(2). |
| Abstract | We derive the effective angular momentum operator to 1/m(2) and one-loop order in non-relativistic quantum electrodynamics (NRQED). In both dimensional and three-momentum-cutoff regularization schemes, we obtain the non-relativistic expansion for the spin and orbital angular momentum operators of the electron and photon, respectively. Our result is useful in precision calculations of the angular momentum properties for non-relativistic QED bound states, such as atom systems. |
| URI | http://hdl.handle.net/20.500.11897/241485 |
| ISSN | 1029-8479 |
| DOI | 10.1007/JHEP02(2011)107 |
| Indexed | SCI(E) |
| Appears in Collections: | 物理学院 |
