5,882 research outputs found
Holographic Geometry of Entanglement Renormalization in Quantum Field Theories
We study a conjectured connection between the AdS/CFT and a real-space
quantum renormalization group scheme, the multi-scale entanglement
renormalization ansatz (MERA). By making a close contact with the holographic
formula of the entanglement entropy, we propose a general definition of the
metric in the MERA in the extra holographic direction, which is formulated
purely in terms of quantum field theoretical data. Using the continuum version
of the MERA (cMERA), we calculate this emergent holographic metric explicitly
for free scalar boson and free fermions theories, and check that the metric so
computed has the properties expected from AdS/CFT. We also discuss the cMERA in
a time-dependent background induced by quantum quench and estimate its
corresponding metric.Comment: 42pages, 9figures, reference added, minor chang
What Can Consciousness Anomalies Tell Us About Quantum Mechanics?
In this paper, I explore the link between consciousness and
quantum mechanics. Often explanations that invoke consciousness to help
explain some of the most perplexing aspects of quantum mechanics are
not given serious attention. However, casual dismissal is perhaps unwarranted,
given the persistence of the measurement problem, as well as the
mysterious nature of consciousness. Using data accumulated from experiments
in parapsychology, I examine what anomalous data with respect to
consciousness might tell us about various explanations of quantum mechanics.
I examine three categories of quantum mechanics interpretations
that have some promise of fitting with this anomalous data. I conclude that
explanations that posit a substratum of reality containing pure information
or potentia, along the lines proposed by Bohm and Stapp, off er the best fit
for various categories of this data
The Unicellular State as a Point Source in a Quantum Biological System.
A point source is the central and most important point or place for any group of cohering phenomena. Evolutionary development presumes that biological processes are sequentially linked, but neither directed from, nor centralized within, any specific biologic structure or stage. However, such an epigenomic entity exists and its transforming effects can be understood through the obligatory recapitulation of all eukaryotic lifeforms through a zygotic unicellular phase. This requisite biological conjunction can now be properly assessed as the focal point of reconciliation between biology and quantum phenomena, illustrated by deconvoluting complex physiologic traits back to their unicellular origins
Photonic entanglement as a resource in quantum computation and quantum communication
Entanglement is an essential resource in current experimental implementations
for quantum information processing. We review a class of experiments exploiting
photonic entanglement, ranging from one-way quantum computing over quantum
communication complexity to long-distance quantum communication. We then
propose a set of feasible experiments that will underline the advantages of
photonic entanglement for quantum information processing.Comment: 33 pages, 4 figures, OSA styl
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