Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Christiansen, Martin P."'
Autor:
Schupp, Falk, Pochodzalla, Josef, Bölting, Michael, Christiansen, Martin, Gaitanos, Theodoros, Lenske, Horst, Steinen, Marcell
We propose a new method to measure the evolution of the neutron skin thickness between different isotopes with small statistical and systematic uncertainties. We consider antiproton--nucleus interactions close to the production threshold of $\Lambda
Externí odkaz:
http://arxiv.org/abs/2411.13622
We prove a rigorous lower bound on the correlation energy of interacting fermions in the mean-field regime for a wide class of singular interactions, including the Coulomb potential. Combined with the upper bound obtained in \cite{ChrHaiNam-23b}, our
Externí odkaz:
http://arxiv.org/abs/2405.01386
Autor:
Christiansen, Martin Ravn
Publikováno v:
Commun. Math. Phys. 405, 18 (2024)
We prove that the 2-body operator $\gamma_2^\Psi$ of a fermionic $N$-particle state $\Psi$ obeys $||\gamma_2^\Psi||_{HS} \leq \sqrt{5} N$, which complements the bound of Yang that $||\gamma_2^\Psi||_{op} \leq N$. This estimate furthermore resolves a
Externí odkaz:
http://arxiv.org/abs/2305.00834
Autor:
Christiansen, Martin Ravn
This thesis concerns the correlation structure of interacting Fermi gases on a torus in the mean-field regime. A bosonization method in the spirit of Sawada is developed to analyze the system, and is applied to obtain an upper bound for the correlati
Externí odkaz:
http://arxiv.org/abs/2301.12817
Autor:
Christiansen, Martin, Schupp, Falk, Achenbach, Patrick, Bölting, Michael, Pochodzalla, Josef, Steinen, Marcell
In this work we propose a new method to measure the evolution of the neutron skin thickness between different isotopes. We consider antiproton-nucleus interactions close to the production threshold of ${\Lambda}\overline{\Lambda}$ and ${\Sigma}\overl
Externí odkaz:
http://arxiv.org/abs/2209.03875
We prove a rigorous upper bound on the correlation energy of interacting fermions in the mean-field regime for a wide class of interaction potentials. Our result covers the Coulomb potential, and in this case we obtain the analogue of the Gell-Mann$-
Externí odkaz:
http://arxiv.org/abs/2208.01581
Publikováno v:
Lett. Math. Phys. 112, 114 (2022)
We consider an effective quasi-bosonic Hamiltonian of the electron gas which emerges naturally from the random phase approximation and describes the collective excitations of the gas. By a rigorous argument, we explain how the plasmon modes can be in
Externí odkaz:
http://arxiv.org/abs/2206.13073
We present a general approach to justify the random phase approximation for the homogeneous Fermi gas in three dimensions in the mean-field scaling regime. We consider a system of $N$ fermions on a torus, interacting via a two-body repulsive potentia
Externí odkaz:
http://arxiv.org/abs/2106.11161
Autor:
Christiansen, Martin Peter
Automated and robotic ground-vehicle solutions are gradually becoming part of the agricultural industry, where they are used for performing tasks such as feeding, herding, planting, harvesting, and weed spraying. Agricultural machinery operates in bo
Externí odkaz:
http://arxiv.org/abs/1906.05111
Autor:
Christiansen, Martin Peter, Laursen, Morten Stigaard, Mikkelsen, Birgitte Feld, Teimouri, Nima, Jørgensen, Rasmus Nyholm, Sørensen, Claus Aage Grøn
Publikováno v:
EurAgEng 2018
ESA operates the Sentinel-1 satellites, which provides Synthetic Aperture Radar (SAR) data of Earth. Recorded Sentinel-1 data have shown a potential for remotely observing and monitoring local conditions on broad acre fields. Remote sensing using Sen
Externí odkaz:
http://arxiv.org/abs/1809.01652