生锈 发表于 2025-3-26 22:41:15
Stability Under Space Translations. Positive EnergyIn this chapter we discuss the requirements III and IV stated in Chap. .. In the sequel we shall denote by . the Hilbert space sector (HSS) defined by a . satisfying (.), taking always for granted that ..HAVOC 发表于 2025-3-27 01:51:53
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Quantum Mechanics. Algebraic Structure and StatesWe briefly review the basic structure of quantum mechanics (QM) with the aim of covering both the case of systems with a finite number of degrees of freedom (ordinary QM) as well as the case of systems with an infinite number of degrees of freedom (briefly .).姑姑在炫耀 发表于 2025-3-27 14:13:00
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Non-Fock RepresentationsAs anticipated in the previous discussions, the Fock representation is very special to the finite-dimensional case and to free fields. Actually, as a consequence of Proposition ., non-Fock representations are required in order to describe many-particle systems with non-zero density in the thermodynamical limit.GULF 发表于 2025-3-27 23:59:16
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