Zobrazeno 1 - 10
of 1 071
pro vyhledávání: '"Kessel, M."'
We investigate the crystal properties of CdTe nanowires overgrown with HgTe. Scanning electron microscopy (SEM) and scanning transmission electron microscopy (STEM) confirm, that the growth results in a high ensemble uniformity and that the individua
Externí odkaz:
http://arxiv.org/abs/1812.01248
Autor:
Kessel, M., Hajer, J., Karczewski, G., Schumacher, C., Brüne, C., Buhmann, H., Molenkamp, L. W.
Publikováno v:
Phys. Rev. Materials 1, 023401 (2017)
We present results on the growth of CdTe-HgTe core-shell nanowires, a realization of a quasi one-dimensional heterostructure of the topological insulator HgTe. The growth is a two step process consisting of the growth of single crystalline zinc blend
Externí odkaz:
http://arxiv.org/abs/1703.09106
Publikováno v:
Eur.Phys.J.C65:303-310,2010
The reality and convexity of the effective potential in quantum field theories has been studied extensively in the context of Euclidean space-time. It has been shown that canonical and path-integral approaches may yield different results, thus resolv
Externí odkaz:
http://arxiv.org/abs/0907.1174
Publikováno v:
Eur.Phys.J.C64:319-349,2009
In QFT the effective potential is an important tool to study symmetry breaking phenomena. It is known that, in some theories, the canonical approach and the path-integral approach yield different effective potentials. In this paper we investigate thi
Externí odkaz:
http://arxiv.org/abs/0901.3700
Publikováno v:
Eur.Phys.J.C61:495-518,2009
We show how to transform a $d$-dimensional Euclidean path integral in terms of two (Cartesian) fields to a path integral in terms of polar field variables. First we present a conjecture that states how this transformation should be done. Then we show
Externí odkaz:
http://arxiv.org/abs/0901.0815
Autor:
van Kessel, M. T. M.
We will investigate two models which exhibit SSB in the canonical approach: the N=1 and N=2 linear sigma model. In both models the Green's functions and the effective potential will be computed in the path-integral approach. We will demonstrate how w
Externí odkaz:
http://arxiv.org/abs/0810.1412
Autor:
van Kessel, M. T. M.
Publikováno v:
Nucl.Phys.B800:330-348,2008
We construct a theory which has the same particle content as softly broken minimal supersymmetric QED (MSQED) and is free of quadratic divergences up to two loops. Also this theory is completely gauge invariant. It appears that MSQED is not at all th
Externí odkaz:
http://arxiv.org/abs/0704.3516
We perform an explicit computation of the effective action for a few zero-dimensional Euclidean field theories in which the bare action exhibits several (or infinitely many) minima. In all cases the effective action is well-defined for all field valu
Externí odkaz:
http://arxiv.org/abs/hep-ph/0509142
Autor:
Feil, N. M., Mayer, E., Nair, A., Christian, B., Ding, A., Sun, C., Mihalic, S., Kessel, M., Žukauskaitė, A., Ambacher, O.
Publikováno v:
Journal of Applied Physics; 10/28/2021, Vol. 130 Issue 16, p1-10, 10p
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