Functional Schrödinger picture approach to a dilute Bose gas and fluctuation correction to the ground state energy density

Mokpo National Maritime University, Mokpo, Korea; Hankyo University, Kwang-Yang, Korea; Yonsei University, Seoul, Korea; Yonsei University, Wonju, Korea

Received 1 July 1999, accepted 7 March 2000 by G. Röpke

Quantum hexaspherical observables for electrons

Laboratoire de Physique Theorique, ENS, 24 rue Lhomond, F-75231 Paris Cedex 05; jaekel(at)physique.ens.fr

Received 18 October 1999, revised 2 February 2000, accepted 20 April 2000 by K. Fredenhagen

Cosmic phase transitions

FZ Rossendorf, Dresden, Germany; kaempfer(at)fz-rossendorf.de

Received 28 April 2000, accepted after revisions 6 July 2000 by F. W. Hehl

Early Gedanken experiments of quantum mechanics revisited

Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom; ys219(at)phy.cam.ac.uk

Received 1 February 2000, revised 23 June 2000, accepted 12 July 2000 by G. Röpke