Moreover, they contain two additional contributions corresponding to the local decay of the glue component of the f 0(1500): one comes from the process of regularization of the quark loop, the other from the interaction term a 2 χ 2 φ 2. Except for the ηη′ case, this local decay...
Cavity-QED systems have recently reached a regime where the light-matter interaction strength amounts to a non-negligible fraction of the resonance frequencies of the bare subsystems. In this regime, it is known that the usual normal-order correlation fu
In the language of Bjorken and Feynman the virtual γ (or, in general, any gauge boson) sees the quark partons inside the nucleon target as quasi-free, because their (Lorentz dilated) QCD interaction time is much longer than τγ ∼ 1/Q, the duration of the virtual photon interaction....
This critical value of interaction strength is too large47,27 for two reasons. First, when d →∞ our criterion corresponds to subbands that meet with an exponentially small density of states, therefore not yet truly closing the gap. Secondly, when d →∞, the order of a diagram has to ...
The latter is attributed to the increased scattering rates dominated by the electron-phonon interaction caused by the temperature increase, which is consistent with the results in Supplementary Fig. 3. The n-type Na2TlSb exhibits higher σ relative to the p-type Na2TlSb, which is consistent ...
interaction with longitudinal W bosons denoted as π below): L = + b 2 1 +b 2 g v 2 ¯ t R γ µ t R ρ 0 µ + b 1 1 +b 1 g v 2 ¯ t L γ µ t L ρ 0 µ − b 2 1 +b 2 g v 2 ¯ b R γ µ b R ρ 0 µ − b 1 1 +b 1 g v...
feynman diagramfield theoryinteractionsmagnetic fieldsThe transverse electrical conductivity of an electron-phonon system under a strong static magnetic field is calculated up to the second order in the electron-phonon interaction starting from the Nalcano-Kubo formula and using the Feynman diagram ...
On the other hand, it is known that in quantum field theory in curved spacetime, quantum loop effects induce effective violations of the strong equivalence principle in the sense that the corresponding effective Lagrangian contains interaction terms which depend explicitly on the curvature, such as R...
cles as well as the properties of QCD as the theory of strong interaction. We calculated the strong coupling constants g ccq ccq π0,± , g bcq bcq π0,± and g bbq bbq π0,± , with q being either u or d quark, in the framework of the light cone QCD sum rule and using the...
The system could be destabilized by the large electron–phonon interaction, thus the reducing of critical pressure may be found in the synthesis. Conclusion In this work, we investigate the decomposition of B–C, and employed the evolutionary algorithm for finding the stable structure at high ...