Zobrazeno 1 - 10
of 2 683
pro vyhledávání: '"Kohler, H"'
Publikováno v:
In Sensors and Actuators: B. Chemical 1 September 2021 342
Autor:
Stauber, T., Kohler, H.
Publikováno v:
Nano Lett. 16, 6844-6849 (2016)
The charge susceptibility of twisted bilayer graphene is investigated in the Dirac cone, respectively random-phase approximation. For small enough twist angles $\theta\lesssim 2^\circ$ we find weakly Landau damped interband plasmons, i.~e., collectiv
Externí odkaz:
http://arxiv.org/abs/1610.07757
Autor:
Kohler, H. S., Kwong, N. H.
Linear response functions are calculated for symmetric nuclear matter of normal density by time-evolving two-time Green's functions with conserving self-energy insertions, thereby satisfying the energy-sum rule. Nucleons are regarded as moving in a m
Externí odkaz:
http://arxiv.org/abs/1311.4616
Autor:
Kohler, H. S.
The Busch-formula relates the energy-spectrum of two point-like particles interacting in a 3-D isotropic Harmonic Oscillator trap to the free scattering phase-shifts of the particles. This formula is used to find an expression for the \it shift \rm i
Externí odkaz:
http://arxiv.org/abs/1110.0039
Publikováno v:
Phys. Rev E 84, 061133 (2011)
We derive fidelity decay and parametric energy correlations for random matrix ensembles where time--reversal invariance of the original Hamiltonian is broken by the perturbation. Like in the case of a symmetry conserving perturbation a simple relatio
Externí odkaz:
http://arxiv.org/abs/1104.1660
Autor:
Kohler, H. S.
In scattering theory, the unitary limit is defined by an infinite scattering-length and a zero effective range, corresponding to a phase-shift \pi/2, independent of energy. This condition is satisfied by a rank-1 separable potential V(k,k')=-v(k)v(k'
Externí odkaz:
http://arxiv.org/abs/1008.3884
Autor:
Kohler, H. S.
A microscopic theory of nuclei based on a 'free' scattering NN-potential is meaningful only if this potential fits on-shell scattering data.This is a necessary but not sufficient condition for the theory to be successful.It has been demonstrated repe
Externí odkaz:
http://arxiv.org/abs/0907.1539
Publikováno v:
New J. Phys. 10, 115016 (2008)
Random matrix theory is used to represent generic loss of coherence of a fixed central system coupled to a quantum-chaotic environment, represented by a random matrix ensemble, via random interactions. We study the average density matrix arising from
Externí odkaz:
http://arxiv.org/abs/0807.4913
Autor:
Kohler, H. S.
This report concerns the energy of a zero-temperature many-body system of spin 1/2 fermions in the unitary limit. In a previous report (arXiv:0705.0944) this energy was determined to be xi~0.24 in units of the free gas kinetic energy, appreciably low
Externí odkaz:
http://arxiv.org/abs/0801.1123