caa a22 4500 469065508 CHVBK 20180323132907.0 cr unu---uuuuu 170328e19920701xx s 000 0 eng 10.1007/BF02728565 doi (NATIONALLICENCE)springer-10.1007/BF02728565 The vacuum for an interacting scalar field [Elektronische Daten] [D. Lamb, A. Capri] Summary: We define a vacuum for a real scalar field interacting with a time-dependentc-number source which vanishes rapidly in the remote past and future. We then show that this vacuum is a more appropriate vacuum for the interacting field than the vacuum for the incoming Heisenberg field in the sense that the energy of the field is lower in the vacuum we propose as compared to the energy of the field in the vacuum for the incoming Heisenberg field. Società Italiana di Fisica, 1992 PACS 03.80 General theory of scattering nationallicence Lamb D. Department of Physics, University of Alberta, T6G 2J1, Edmonton, Alberta, Canada aut Capri A. Department of Physics, University of Alberta, T6G 2J1, Edmonton, Alberta, Canada aut Il Nuovo Cimento B (1971-1996) Società Italiana di Fisica 107/7(1992-07-01), 799-804 107:7<799 1992 107 40764 https://doi.org/10.1007/BF02728565 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02728565 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lamb D. Department of Physics, University of Alberta, T6G 2J1, Edmonton, Alberta, Canada aut NATIONALLICENCE 700 1- Capri A. Department of Physics, University of Alberta, T6G 2J1, Edmonton, Alberta, Canada aut NATIONALLICENCE 773 0- Il Nuovo Cimento B (1971-1996) Società Italiana di Fisica 107/7(1992-07-01), 799-804 107:7<799 1992 107 40764 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer