Results 91 to 100 of about 5,285,566 (268)
Decomposition ofq-deformed Fock spaces
20 pages, LaTeX ...
Kashiwara, M., Miwa, T., Stern, E.
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Why pair production cures covariance in the light-front?
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
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
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Uncertainty principles for the Fock space [PDF]
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]
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.
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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
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]
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
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Superstring in a pp-wave background at finite temperature - TFD approach
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
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

