Results 131 to 140 of about 4,977,477 (349)

Photonic Energy‐Coherence Theorem and Experimental Validations

open access: yesLaser &Photonics Reviews, EarlyView.
A thermodynamic framework for quantum wave‐particle duality is presented, where each behaviors attribute is quantified through the extractable energy of a system. The energy capacity establishes a direct connection to both fringe visibility and path distinguishability. Active control of single‐photon states demonstrates distinct energetic contributions
Yan‐Han Yang   +7 more
wiley   +1 more source

Simultaneous Photoacoustic and Laser‐Induced Ultrasound Imaging of Animals and Humans via a Semi‐Transparent Ultrasound Transducer

open access: yesLaser &Photonics Reviews, EarlyView.
Combined photoacoustic (PA) and ultrasound (US) imaging commonly requires an external pulser to transmit US waves, making systems relatively complicated and suboptimal. Here simultaneous PA and laser‐induced US imaging is demonstrated without using a US pulser. A semi‐transparent ultrasound transducer converts some portion of excitation laser energy to
Bjarne Perleberg   +8 more
wiley   +1 more source

Fixed Point and Acute Point Theorems for New Mappings in a Banach Space

open access: yesJournal of Mathematics, 2019
In a Hilbert space, concepts of attractive point and acute point are studied by many researchers. Moreover, these concepts extended to Banach space. In this paper, we introduce a new class of mappings on Banach space corresponding to the class of all ...
Toshiharu Kawasaki
doaj   +1 more source

Sampling in a Hilbert space [PDF]

open access: yesProceedings of the American Mathematical Society, 1996
An analog of the Whittaker-Shannon-Kotel′nikov sampling theorem is derived for functions with values in a separable Hilbert space. The proof uses the concept of frames and frame operators in a Hilbert space. One of the consequences of this theorem is that it allows us to derive sampling theorems associated with boundary-value problems and some ...
openaire   +3 more sources

Global and microlocal aspects of Dirac operators: Propagators and Hadamard states

open access: yesMathematische Nachrichten, EarlyView.
Abstract We propose a geometric approach to construct the Cauchy evolution operator for the Lorentzian Dirac operator on Cauchy‐compact globally hyperbolic 4‐manifolds. We realize the Cauchy evolution operator as the sum of two invariantly defined oscillatory integrals—the positive and negative Dirac propagators—global in space and in time, with ...
Matteo Capoferri, Simone Murro
wiley   +1 more source

Collapse dynamics and Hilbert-space stochastic processes. [PDF]

open access: yesSci Rep, 2021
Bajoni D   +3 more
europepmc   +1 more source

A Universal Kriging predictor for spatially dependent functional data of a Hilbert Space

open access: yes, 2013
: We address the problem of predicting spatially dependent functional data belonging to a Hilbert space, with a Functional Data Analysis approach. Having defined new global measures of spatial variability for functional random processes, we derive a ...
A. Menafoglio, P. Secchi, M. D. Rosa
semanticscholar   +1 more source

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