KASHIWA, T., OHNISHI, Y., YAMAMOTO, K., OHSHIMA, H.
A novel way to compensate the distortion of Power Amplifier(PA) modules is presented in this paper.Adiodelinearizerwith an inductor is used to compensate thedistortion of the PA using LDMOS FET and...
Nambu-Jona-Lasinio Model Coupled to Constant Electromagnetic Fields in D-Dimension (1997)
Ishi-i, M., Kashiwa, T., Tanimura, N.
Critical dynamics of the Nambu-Jona-Lasinio model, coupled to a constant electromagnetic field in D=2, 3, and 4, is reconsidered from a viewpoint of infrared behavior and vacuum instability. The...
Critical Couplings in the Nambu--Jona-Lasinio Model with the Constant Electromagnetic Fields (1997)
Ishi-i, M., Kashiwa, T., Tanimura, N.
A detailed analysis is performed for the Nambu--Jona-Lasinio model coupled with constant (external) magnetic and/or electric fields in two, three, and four dimensions. The infrared cut-off is...
Gauge Independence in terms of the Functional Integral (1996)
Among various approaches in proving gauge independence, models containing an explicit gauge dependence are convenient. The well-known example is the gauge parameter in the covariant gauge fixing...
Coherent states, path integral, and semiclassical approximation (1996)
Funahashi, K, Kashiwa, T, Sakoda, S, Fujii, K
Using the generalized coherent states we argue that the path integral formulae for SU(2) and SU(1,1) (in the discrete series) are WKB exact, if the starting point is expressed as the trace of...
Coherent states, Path integral, and Semiclassical approximation (1994)
Funahashi, K., Kashiwa, T., Sakoda, S., Fujii, K.
Using the generalized coherent states we argue that the path integral formulae for $SU(2)$ and $SU(1,1)$ (in the discrete series) are WKB exact,if the starting point is expressed as the trace of...
Ordering, symbols, and finite-dimensional approximations of path integrals (1994)
Kashiwa, T., Sakoda, S., Zenkin, S. V.
We derive general form of finite-dimensional approximations of path integrals for both bosonic and fermionic canonical systems in terms of symbols of operators determined by operator ordering. We...