拱墙
发表于 2025-3-25 07:12:49
Interacting Fields and Scattering Amplitudes,of the derivation of the Gell-Mann-Low formula for quantum field correlation functions. The calculation at the second order of perturbation theory reveals the divergencies which can be cured by the mass and coupling constant renormalization. We show that divergencies are to be expected in higher ord
Obedient
发表于 2025-3-25 10:43:35
Thermal States and Quantum Scalar Field on a Curved Manifold,ween these two topics as quantum fields in some moving frames (accelerated frames) can be viewed as thermal fields (the Unruh effect) and quantum fields on a black hole background have the thermal spectrum. We derive the formula for the correlation functions of the scalar quantum field in the quantu
有花
发表于 2025-3-25 14:11:15
The Functional Integral,ace-time dimension. Feynman formulated his path integral integral on the physical basis of an interference of short time amplitudes. The composition of short time amplitudes has a mathematical version of the Trotter product formula. If the potentials and wave functions have an analytic continuation
并排上下
发表于 2025-3-25 19:54:17
Feynman Integral in Terms of the Wiener Integral, can be considered as a way to treat the path integral. However, for some problems in quantum mechanics, e.g., the scattering and interference, we must work with a real time. Moreover, for potentials which are unbounded from below the imaginary time version is not applicable. For these reasons a rea
人类
发表于 2025-3-25 20:58:29
Application of the Feynman Integral for Approximate Calculations,n . resulting in a direct way from the path integral. We formulate the semi-classical approximation as a stationary phase method of the calculation of integrals. We perform such an integral for harmonic and anharmonic oscillators. In application to QFT we show that the result of the stationary phase
自由职业者
发表于 2025-3-26 00:42:13
http://reply.papertrans.cn/59/5836/583581/583581_26.png
外星人
发表于 2025-3-26 07:38:01
An Interaction with a Quantum Electromagnetic Field,e field strength variables are not sufficient. We need the vector potentials. The problem arises with the covariant quantization of the four-potentials. We must choose the correct number of degrees of freedom for quantization. We can distinguish physical components imposing a gauge condition. In thi
Pillory
发表于 2025-3-26 08:34:51
http://reply.papertrans.cn/59/5836/583581/583581_28.png
BLA
发表于 2025-3-26 13:34:03
Quantization of Non-Abelian Gauge Fields,gnetic potential of Chap. .. The solution involves a non-linear coupling of gauge field components. The coupling of gauge fields to matter fields together with the Higgs mechanism of mass generation led to the standard (Weinberg-Salam) model of particle physics which is the basis of the contemporary
muster
发表于 2025-3-26 16:49:15
http://reply.papertrans.cn/59/5836/583581/583581_30.png