Results 91 to 100 of about 5,285,566 (268)

Decomposition ofq-deformed Fock spaces

open access: yesSelecta Mathematica, 1995
20 pages, LaTeX ...
Kashiwara, M., Miwa, T., Stern, E.
openaire   +3 more sources

Why pair production cures covariance in the light-front?

open access: yes, 2005
We show that the light-front vaccum is not trivial, and the Fock space for positive energy quanta solutions is not complete. As an example of this non triviality we have calculated the electromagnetic current for scalar bosons in the background field ...
A. T. Suzuki   +21 more
core   +1 more source

Quenching the Hubbard Model: Comparison of Nonequilibrium Green's Function Methods

open access: yesContributions to Plasma Physics, EarlyView.
ABSTRACT We benchmark nonequilibrium Green's function (NEGF) approaches for interaction quenches in the half‐filled Fermi–Hubbard model in one and two dimensions. We compare fully self‐consistent two‐time Kadanoff–Baym equations (KBE), the generalized Kadanoff–Baym ansatz (GKBA), and the recently developed NEGF‐based quantum fluctuations approach (NEGF‐
Jan‐Philip Joost   +3 more
wiley   +1 more source

Uncertainty principles for the Fock space [PDF]

open access: yes, 2015
In this note, we prove several versions of the uncertainty principle for the Fock space F 2 in the complex plane. In particular, for any unit vector f in F 2, we show that dist( f + zf , [ f ])dist( f - zf , [ f ])≥1, where [ f ]=C f is the one ...
Kehe Zhu
semanticscholar   +1 more source

Approximating the Fock space with the toy Fock space [PDF]

open access: yes, 2003
I. The toy Fock space II. The Fock space III. Embedding the toy Fock space into the Fock space IV. Projections on the toy Fock space V. Approximations VI. Probabilistic interpretations VII.
openaire   +1 more source

The Virial Expansion of the Hydrogen Equation of State in Comparison to PIMC Simulations: The Quasiparticle Concept, IPD, and Ionization Degree

open access: yesContributions to Plasma Physics, EarlyView.
ABSTRACT The properties of plasmas in the low‐density limit are described by virial expansions. Analytical expressions are known for the lowest virial coefficients from Green's function approaches. Recently, accurate path‐integral Monte Carlo (PIMC) simulations were performed for the hydrogen plasma at low densities by Filinov and Bonitz (Phys. Rev.
Gerd Röpke   +3 more
wiley   +1 more source

Many-body localization in the Fock space of natural orbitals

open access: yesSciPost Physics, 2018
We study the eigenstates of a paradigmatic model of many-body localization in the Fock basis constructed out of the natural orbitals. By numerically studying the participation ratio, we identify a sharp crossover between different phases at a disorder
Wouter Buijsman, Vladimir Gritsev, Vadim Cheianov
doaj   +1 more source

Hankel Operators on Fock Spaces [PDF]

open access: yes, 2013
We study Hankel operators on the weighted Fock spaces\ud Fp. The boundedness and compactness of these operators are characterized in terms of BMO and VMO, respectively. Along the way, we also study Berezin transform and harmonic conjugates on the plane.
Perala, A.   +2 more
openaire   +1 more source

Superstring in a pp-wave background at finite temperature - TFD approach

open access: yes, 2004
A thermodynamical analysis for the type IIB superstring in a pp-wave background is considered. The thermal Fock space is built and the temperature SUSY breaking appears naturally by analyzing the thermal vacuum.
A.L. Gadelha   +38 more
core   +1 more source

Achieving Multiswitchable Phases to Govern Enhanced Photocatalysis in Staggered In2Se3/SnSe Heterostructure

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Multiswitching between type‐II and Z‐scheme phases within a pristine In2Se3/SnSe heterostructure enable controllable carrier dynamics and enhanced photocatalytic performance. Two‐dimensional staggered heterostructures, featuring by the intrinsically facilitate charge separation, provide promising platforms for efficient photocatalytic water splitting ...
Keying Han   +7 more
wiley   +1 more source

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