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Multiple Uncertainties in Time-Variant Cosmological Particle Data
Visualization Applications Cosmology Parallel Coordinates Uncertainty Visualization
2015/7/29
Though the mediums for visualization are limited, the potential dimensions of a dataset are not. In many areas of scientific study, understanding the correlations between those dimensions and their un...
Category theory applied to a radically new but logically essential description of time and space
Category theory applied radically new logically essential description
2015/7/28
McTaggart's ideas on the unreality of time as expressed in "The Nature of Existence" have retained great interest for many years for scholars, academics and other philosophers. In this essay, there is...
The Flow of Time
Time Flow of time Passage of time
2009/9/17
I distinguish three views, a defence of any one of which would go some way towards vindicating the view that there is something objective about the passage of time: (i) the view that the present momen...
The Adolescence of Relativity: Einstein, Minkowski, and the Philosophy of Space and Time
operationalism Einstein Minkowski simultaneity conventionalism
2009/9/16
An often repeated account of the genesis of special relativity tells us that relativity theory was to a considerable extent the fruit of an operationalist philosophy of science. Indeed, Einstein’s 190...
Time Symmetry and the Many-Worlds Interpretation
Many-Worlds Interpretation quantum mechanics probability time symmetry
2009/4/22
An attempt to solve the collapse problem in the framework of a time-symmetric quantum formalism is reviewed. Although the proposal does not look very attractive, its concept - a world defined by two q...
Within the context of general relativity, we consider one definition of a 'time machine' proposed by Earman, Smeenk, and Wuthrich (2009). They conjecture that, under under their definition, the class ...
On the Emergence of Time in Quantum Gravity
quantum gravity emergence quantum geometrodynamics
2008/4/22
We discuss from a philosophical perspective the way in
which the normal concept of time might be said to `emerge'
in a quantum theory of gravity. After an introduction, we
briefly discuss the notio...
On the problem of emergence of classical space-time: The quantum-mechanical approach
Emergence generalized functions Hilbert space
2008/4/22
The classical space-time structure is derived from the structure of an abstract infinite dimensional separable Hilbert space S. For this S is first realized as a Hilbert space H* of functions of abstr...
Passage of Time in a Planck Scale Rooted Local Inertial Structure
Flow of time Temporal Transience
2008/4/22
It is argued that the `problem of time' in quantum gravity necessitates a refinement of thelocal inertial structure of the world, demanding a replacement of the usual Minkowski lineelement by a 4+2n d...
Probability, Arrow of Time and Decoherence
time asymmetry of probabilities decoherent histories
2008/4/22
This paper relates both to the metaphysics of probability and to the physics of time asymmetry. Using the formalism of decoherent histories, it investigates whether intuitions about intrinsic time dir...
Probability and time symmetry in classical Markov processes
probability time symmetry Markov processes arrow of time
2008/4/22
Definitions of time symmetry and examples of time-directed behaviour are discussed in the framework of discrete Markov processes. It is argued that typical examples of time-directed behaviour can be d...
Quantum Time Arrows, Semigroups and Time-Reversal in Scattering
Irreversibility time arrows rigged Hilbert space
2008/4/22
Two approaches toward the arrow of time for scattering processes have been proposed in rigged Hilbert space quantum mechanics. One, due to Arno Bohm, involves preparations and registrations in laborat...
Recent Conceptual Consequences of Loop Quantum Gravity. Part III: A Postscript On Time.
Natural Philosophy Philosophy of Science Quantum Gravity
2008/4/22
With a view to the results discussed in the first two parts of this paper, the concept of time is revisited oncemore and chosen as an example in order to demonstrate the meaning of fundamental in both...
Remarks on Space-time and Locality in Everett's Interpretation
quantum mechanics Everett many-minds many-worlds
2008/4/22
Interpretations that follow Everett's idea that (at some level of description) the universal wave function contains a multiplicity of coexisting realities, usually claim to give a completely local acc...
Review of Palle Yourgrau's "Gödel Meets Einstein: Time Travel in the Gödel Universe."
Gö del Universe Time Travel
2008/4/22
This is a review of Yourgrau's book, the second edition of his "The Disappearance of Time."