Path integral in quantum field theories
نویسندگان
چکیده
Introduction/purpose: Starting from the Hamiltonian an alternative description of quantum mechanics has been given, based on sum all possible paths between initial and a final point. Methods: Theoretical methods mathematical physics. Integral method path integral. Results: The concepts integral could be applied to other branches physics, not limited mechanics. Conclusions: Path approach gives global fields, unlike usual Lagrangian which is local fields.
منابع مشابه
Path-Integral for Quantum Tunneling
Path-integral for theories with degenerate vacua is investigated. The origin of the non Borel-summability of the perturbation theory is studied. A new prescription to deal with small coupling is proposed. It leads to a series, which at low orders and small coupling differs from the ordinary perturbative series by nonperturbative amount, but is Borel-summable. ⋆ E-mail address: [email protected]...
متن کاملQuantum Path-Integral qPATHINT Algorithm
Received: November 10, 2017 Revised: December 12, 2017 Accepted: December 12, 2017 Abstract: Background: A path-integral algorithm, PATHINT used previously for several systems, has been generalized from 1 dimension to N dimensions, and from classical to quantum systems into qPATHINT. Previous publications applied qPATHINT to two systems developed by the author, in neocortical interactions and f...
متن کاملPath integral for quantum operations
In this paper we consider a phase space path integral for general time-dependent quantum operations, not necessarily unitary. We obtain the path integral for a completely positive quantum operation satisfied Lindblad equation (quantum Markovian master equation). We consider the path integral for quantum operation with a simple infinitesimal generator. PACS numbers: 03.67.Lx, 03.67.−a, 03.65.−w
متن کاملHomotopy Quantum Field Theories
In this short note we provide a review of some developments in the area of homotopy quantum field theories, loosely based on a talk given by the second author at the Xth Oporto Meeting on Geometry, Topology and Physics. Homotopy Quantum Field Theories Homotopy quantum field theories were invented by Turaev [10], though the idea goes back to Segal’s discussion of the possible geometry underlying...
متن کاملTopological Quantum Field Theories
We intruduce a new invariant for σ models (and foliations more generally) using the even pairing between K-homology and cyclic homology. We try to calculate it for the simplest case of foliations, namely principal bundles. We end up by discussing some possible physical applications primarily in Quantum Gravity and M-Theory. PACS classification: 11.10.-z; 11.15.-q; 11.30.-Ly
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Vojnotehni?ki Glasnik
سال: 2022
ISSN: ['0042-8469', '2217-4753']
DOI: https://doi.org/10.5937/vojtehg70-35882