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140122 ||| eng |
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|a 9783709182840
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|a Urban, Paul
|e [editor]
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| 245 |
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|a Concepts in Hadron Physics
|h Elektronische Ressource
|b Proceedings of the X. Internationale Universitätswochen für Kernphysik 1971 der Karl-Franzens-Universität Graz, at Schladming (Steiermark, Austria), 1st March – 13th March 1971
|c edited by Paul Urban
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| 250 |
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|a 1st ed. 1971
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| 260 |
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|a Vienna
|b Springer Vienna
|c 1971, 1971
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| 300 |
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|a XVII, 424 p
|b online resource
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| 505 |
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|a Ten Years of Schladming; Reflection of the Developments in High Energy Physics -- High Energy Physics and Big Science -- Simple Approach to the Reggeisation of Photoproduction -- Theory and Practice of Complex Regge Poles -- Multi Particle Dual Model -- Non-Local Approach to Weak Interactions -- Renormalizable ”Deception” Theory of Weak Interactions -- A Non-Local Field Theory Approach to Strong Interaction Dynamics -- Automorphism Groups of C*-Algebras, Fell Bundles, W*-Bigebras, and the Description of Internal Symmetries in Algebraic Quantum Theory -- Ultralocal Quantum Field Theory -- Null Plane Field Theory -- Some External Field Problems in Quantum Electrodynamics -- Perturbation Theory for a Class of Nonpolynomial Lagrangian Field Theories -- Electromagnetic Interactions. An Experimental Survey -- Light Cone Expansions and Applications -- Summary—First Week -- Summary—Second Week -- Seminars
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| 653 |
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|a Industrial Management
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| 653 |
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|a Quantum field theory
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| 653 |
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|a Elementary particles (Physics)
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| 653 |
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|a Elementary Particles, Quantum Field Theory
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|a eng
|2 ISO 639-2
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| 989 |
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|b SBA
|a Springer Book Archives -2004
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| 490 |
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|a Few-Body Systems, Supplementa
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| 028 |
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|a 10.1007/978-3-7091-8284-0
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| 856 |
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|u https://doi.org/10.1007/978-3-7091-8284-0?nosfx=y
|x Verlag
|3 Volltext
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| 082 |
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|a 530.14
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| 520 |
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|a Soluble quantum field theory models are a rare commodity. An infinite number of degrees of freedom and noncompact invariance groups have a nasty habit of ex ploding in the model-makers' face. Nevertheless, impor tant progress has recently been made in the class of superrenormalizable relativistic theories, such as a self-interacting boson in a two-dimensional space time [ 1]. These results have been obtained starting with the free field and adding the interaction in a carefully controlled way. Yet, the models successfully studied in this way do DQ~ have an infinite field strength renormalization, which, at least according to perturbation theory, should appear for realistic relativistic models in four-dimensional space time. ~2~!Y~~!9n_~g_~h~_~gg~1 The ultralocal scalar field theories discussed in these lecture notes are likewise motivated by relativistic theories but are based on a different approximatiGn. This approximation formally amounts to dropping the spatial gradient term from the Hamiltonian rather than the non linear interaction. For a self-interacting boson field in a space-time of (s+l) dimensions (s~l), the classical ultralocal model Hamiltonian reads (1-1) The quantum theory of this model is the subject of the present paper. This model differs formally from a rela tivistic theory by the term f![Z~Cl(~)]2 d~ which, it is hoped, can, in one or another way, be added as a pertur 229 bation in the quantum theory. However, that still remains a problem for the future, and we confine our remarks to . . a careful study of the "unperturbed" model (1-1)
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