In this chapter we introduce the fundamental concepts behind the Green Function Theory. We start from a description of the second quantization method and then, after introducing the ensemble average of an operator, we define the main object of the theory, the Green function. Further on, after obtaining the equation of motion for the Green function, we introduce the self-energy operator and we d...

This paper derives, in closed form, the Green function of an FEL operating in the strongly Raman regime. This Green function allows for the calculation of the temporal and spatial evolution of an arbitrary input radiation pulse. For the first time superradiance, originally studied in Compton regime by Bonifacio and co-workers [Phys. Rev. Lett. 73 (1994) 70; Nucl. Instr. and Meth. A 239 (1985) 3...

We adapt the proof of the Green-Tao theorem on arithmetic progressions in primes to the setting of polynomials over a finite field, to show that for every k, the irreducible polynomials in Fq[t] contain configurations of the form {f + P g : deg(P) < k}, g = 0.

We adapt the proof of the Green-Tao theorem on arithmetic progressions in primes to the setting of polynomials over a finite fields, to show that for every k, the irreducible polynomials in Fq[t] contains configurations of the form {f + P g : deg(P) < k}, g = 0.

Huan Yang, Fan Zhang, Aaron Zimmerman, and Yanbei Chen Theoretical Astrophysics 350-17, California Institute of Technology, Pasadena, California 91125, USA Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L2Y5, Canada Institute for Quantum Computing, University of Waterloo, Waterloo, Ontario N2L3G1, Canada Department of Physics, West Virginia University, P.O. Box 6315, Morgantow...

OBJECTIVE The purpose of the present study was to devise a predictive index to predict residual liver function before hepatic resection, using technetium-99m diethylenetriamine-penta-acetic acid-galactosyl human serum albumin (99mTc-GSA) liver dynamic single photon emission computed tomography (SPECT). METHODS Fifty-seven patients with liver disease underwent liver dynamic SPECT with 99mTc-GS...