期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
卷 26, 期 15, 页码 2487-2501出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217751X11053523
关键词
Massive and massless vector particles; the first-order formalism; the Hamiltonian form; Belinfante energy-momentum tensor; dilatation symmetry; dilatation current; canonical quantization; Duffin-Kemmer-Petiauformalism
Field theory of massive and massless vector particles is considered in the first-order formalism. The Hamiltonian form of equations is obtained after the exclusion of non-dynamical components. We obtain the canonical and symmetrical Belinfante energy-momentum tensors and their nonzero traces. We note that the dilatation symmetry is broken in the massive case but in the massless case the modified dilatation current is conserved. The canonical quantization is performed and the propagator of the massive fields is found in the Duffin-Kemmer-Petiau formalism.
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