Zobrazeno 1 - 10
of 3 735
pro vyhledávání: '"One-parameter groups"'
Autor:
Schober, Jonas
Standard subspaces are a well studied object in algebraic quantum field theory (AQFT). Given a standard subspace ${\tt V}$ of a Hilbert space $\mathcal{H}$, one is interested in unitary one-parameter groups on $\mathcal{H}$ with $U_t {\tt V} \subsete
Externí odkaz:
http://arxiv.org/abs/2406.04241
Autor:
Garcés, Jorge J., Peralta, Antonio M.
In a first objective we improve our understanding about surjective and bijective bounded linear operators preserving orthogonality from a JB$^*$-algebra $\mathcal{A}$ into a JB$^*$-triple $E$. Among many other conclusions, it is shown that a bounded
Externí odkaz:
http://arxiv.org/abs/2010.08129
Autor:
Garcés, Jorge J., Peralta, Antonio M.
We establish a more precise description of those surjective or bijective continuous linear operators preserving orthogonality between C$^*$-algebras. The new description is applied to determine all uniformly continuous one-parameter semigroups of ort
Externí odkaz:
http://arxiv.org/abs/2004.04155
Publikováno v:
Proceedings of the American Mathematical Society, 2006 Aug 01. 134(8), 2457-2463.
Externí odkaz:
https://www.jstor.org/stable/4098285
We deduce one-parameter group properties for pseudo-differential operators $\operatorname{Op} (a)$, where $a$ belongs to the class $\Gamma ^{(\omega _0)}_*$ of certain Gevrey symbols. We use this to show that there are pseudo-differential operators $
Externí odkaz:
http://arxiv.org/abs/1712.04338
Autor:
De Carli, Laura, Samad, Gohin Shaikh
Publikováno v:
Can. Math. Bull. 59 (2016) 497-507
We show that the discrete Hilbert transform and the discrete Kak-Hilbert transform are infinitesimal generator of one-parameter groups of operators
Externí odkaz:
http://arxiv.org/abs/1506.03362
Autor:
Neeb, Karl-Hermann, Olafsson, Gestur
The concept of reflection positivity has its origins in the work of Osterwalder--Schrader on constructive quantum field theory. It is a fundamental tool to construct a relativistic quantum field theory as a unitary representation of the Poincare grou
Externí odkaz:
http://arxiv.org/abs/1312.6161
Akademický článek
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Autor:
Pesenson, Isaac Z.
Publikováno v:
Sampling Theory in Signal and Image Processing, Vol. 14, No. 1, 2015, pp, 1-16
We extend some results about sampling of entire functions of exponential type to Banach spaces. By using generator $D$ of one-parameter group $e^{tD}$ of isometries of a Banach space $E$ we introduce Bernstein subspaces $\mathbf{B}_{\sigma}(D),\>\>\s
Externí odkaz:
http://arxiv.org/abs/1403.0292
In this communication, we consider the normal ordering of sums of elements of the form (a*^r a a*^s), where a* and a are boson creation and annihilation operators. We discuss the integration of the associated one-parameter groups and their combinator
Externí odkaz:
http://arxiv.org/abs/quant-ph/0401126