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Geometric methods for nonlinear many-body quantum systems
Geometric methods nonlinear many-body quantum systems
2010/12/6
Geometric techniques have played an important role in the seventies, for the study of the spectrum of many-body Schr¨odinger operators. In this paper we provide a formalism which also allows to study ...
Reply to "Comment on `Quenches in quantum many-body systems: One-dimensional Bose-Hubbard model reexamined' ''
Quenches in quantum many-body systems One-dimensional Bose-Hubbard model
2010/11/17
In his Comment [see preceding Comment, Phys. Rev. A 82, 037601 (2010)] on the paper by Roux [Phys.Rev. A 79, 021608(R) (2009)], Rigol argued that the energy distribution after a quench is not related ...
Nonequilibrium Phase Diagram of a Driven-Dissipative Many-Body System
Nonequilibrium Phase Diagram Driven-Dissipative Many-Body System
2010/11/22
We study the nonequilibrium dynamics of a many-body bosonic system on a lattice, subject to
driving and dissipation. The time-evolution is described by a master equation, which we treat within a gene...
We consider an analytic way to make the interacting N-body problem tractable by using harmonic oscillators in place of the relevant two-body interactions.The two-body terms of the N-body Hamiltonian a...
We discuss possible relationships between geometric and topological in-teractions on one side and physical interactions on the other side. This paper is a follow up of [2].
Evolving Nuclear Many-Body Forces with the Similarity Renormalization Group
Nuclear Many-Body Forces Similarity Renormalization Group
2011/1/6
In recent years, the Similarity Renormalization Group has provided a powerful and versatile
means to soften interactions for ab initio nuclear calculations. The substantial contribution of both induc...
BFACF-style algorithms for polygons in the body-centered and face-centered cubic lattices
BFACF-style algorithms polygons face-centered cubic lattices
2010/11/23
In this paper the elementary moves of the BFACF-algorithm [1,2, 5] for lattice polygons are generalised to elementary moves of BFACF-style algorithms for lattice polygons in the body-centred (BCC) and...
We consider an analytic way to make the interacting N-body problem tractable by using harmonic oscillators in place of the relevant two-body interactions.
Fast Converging Path Integrals for Time-Dependent Potentials II: Generalization to Many-body Systems and Real-Time Formalism
Time-dependent potential Effective action Many-body system Imaginary time Real time
2010/11/25
Based on a previously developed recursive approach for calculating the short-time expansion of the propagator for systems with time-independent potentials and its time-dependent generalization for sim...
Elastic electron-deuteron scattering and two-body current operators in the Light-Front Hamiltonian Dynamics
Elastic electron-deuteron scattering two-body current operators Light-Front Hamiltonian Dynamics
2011/1/6
The electromagnetic properties of the deuteron are investigated within a Light-Front Hamilto-
nian Dynamics framework, with a current operator that contains both one-body and two-body
contributions....
A brief review of relativistic effects in few-body systems, of theoretical approaches,recent developments and applications is given. Manifestations of relativistic effects in the binding energies, in ...
Comment on "Five-Body Cluster Structure of the Double-Lambda Hypernucleus Lambda-Lambda-11Be"
Five-Body Cluster Structure Double-Lambda Hypernucleus Lambda-Lambda-11Be
2011/1/6
Hiyama et al. [1] have recently reported on a pioneering five-body n cluster-model (CM)
calculation of 11 Be in order to confront a possible interpretation of the KEK-E373 HIDA event [2].
Prevalence of different double ionization pathways and traces of three-body collisions in strongly driven Helium
double ionization three-body collisions driven Helium
2010/11/16
We present a unified treatment of the prevalence of different double ionization (DI) pathways as a function of the sum of the final electron energies in strongly driven Helium. We do so as a function...
A relativistic coupled-channel formalism for electromagnetic form factors of 2-body bound states
Relativistic quantum mechanics Few-body systems Electromagnetic structure
2011/1/6
We discuss a Poincar´e invariant coupled-channel formalism which is based on the point-form of relativistic quantum mechanics.
Challenges for Modeling Nuclear Structure: Are the Proton and Neutron Masses and A-body Interactions Relevant?
Modeling Nuclear Structure A-body Interactions Relevant
2011/1/7
We discuss some of the challenges that future nuclear modeling may face in order to improve the description of the nuclear structure. One challenge is related to the need for A-body nuclear interactio...