Osmosis
发表于 2025-3-23 11:05:55
Studien zur politischen GesellschaftWe present here the full Lagrangian density of the standard model with one Higgs doublet. We have . where
Interstellar
发表于 2025-3-23 14:40:31
Scattering theory,Before discussing scattering processes in field theory, we briefly recall a few general results in scattering theory in the traditional Lippman-Schwinger formulation.
离开就切除
发表于 2025-3-23 21:24:39
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RECUR
发表于 2025-3-24 01:09:20
https://doi.org/10.1007/978-3-662-28931-0regime, a large number of new particles is typically produced, with large momenta, or, equivalently, small wavelengths. For this reason, the scheme of ordinary Quantum Mechanics, based on the Schrödinger equation for wave functions that depend on a fixed number of variables, is no longer applicable.
抓住他投降
发表于 2025-3-24 03:21:33
https://doi.org/10.1007/978-3-658-29331-4he electromagnetic fields, and Dirac and Yukawa fields. The field description of a physical system allows a direct implementation of the principle of covariance, that guarantees the invariance of the equations of motion under changes of reference frame, and of the principle of causality, which is co
Hearten
发表于 2025-3-24 08:14:08
Lena Schacht,Michael Minkenberg the context of quantum electrodynamics. We define the following symbols: . Equation (3.89) is represented as . while the graphical form of eq. (3.90) is . It is understood that each internal vertex corresponds to a space-time integration.
MEAN
发表于 2025-3-24 13:46:17
Julia Schwanholz,Patrick Theiner in detail the case of scalar fields, transforming as . under a Lorentz transformation .. A second well-known example (which will be discussed at length in Chapters 7 and 8) is provided by vector fields: . In the general case, we have a system of complex fields ., . = 1, ..., ., with the transformat
易于出错
发表于 2025-3-24 16:41:57
https://doi.org/10.1007/978-3-322-83371-6vide a relativistic description of electrons and photons. The theory is based on a pair of spinor fields of opposite chiralities, . and .; invariance under phase multiplication of the spinor fields is assumed, and the corresponding conserved current is identified with the electromagnetic current. No
我说不重要
发表于 2025-3-24 20:28:10
https://doi.org/10.1007/978-3-322-83371-6y of weak interactions. The Fermi Lagrangian density for . and . decays is given by. . From the measured values of muon and neutron lifetimes, . one obtains . while the value . can be extracted from the measurement of baryon semi-leptonic decay rates. The most striking feature of weak interactions,
Senescent
发表于 2025-3-25 00:27:12
https://doi.org/10.1007/978-3-322-93512-0on field and of the . field; similarly, left-handed quarks with charge −1/3 enter the weak interaction term as linear combinations of the corresponding mass eigenfields. We show here that these mixing phenomena are consequences of the mechanism of mass generation in the model.