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“Formal” vs. “Empirical” Approaches to Quantum
... a posteriori relation connecting the theories and the domain of physical reality that both serve to describe. Focusing on the relationship between classical and quantum mechanics, I argue that while certain formal results concerning singular ~ → 0 limits have been taken to preclude the possibility o ...
... a posteriori relation connecting the theories and the domain of physical reality that both serve to describe. Focusing on the relationship between classical and quantum mechanics, I argue that while certain formal results concerning singular ~ → 0 limits have been taken to preclude the possibility o ...
arXiv:gr-qc/9901024 v1 8 Jan 1999 - Philsci
... atic. As we shall see in Section 2, the general notion of emergence is vague, and contentious. And once we settle on some such notion, there is a wide and disparate range of quantum gravity programmes to consider. Furthermore, most of these programmes face hard conceptual problems (as well as techn ...
... atic. As we shall see in Section 2, the general notion of emergence is vague, and contentious. And once we settle on some such notion, there is a wide and disparate range of quantum gravity programmes to consider. Furthermore, most of these programmes face hard conceptual problems (as well as techn ...
Metric fluctuations and the weak equivalence principle
... Linear perturbations are neglected again and both terms can be factorized. By virtue of the definitions of the averages of the fluctuating quantities, the average of h̃i0 (1) vanishes (no crosscorrelations) and consequently the first term. The second term yields a spatially constant but time-depende ...
... Linear perturbations are neglected again and both terms can be factorized. By virtue of the definitions of the averages of the fluctuating quantities, the average of h̃i0 (1) vanishes (no crosscorrelations) and consequently the first term. The second term yields a spatially constant but time-depende ...
The Effect of Communication Costs in Solid
... Unlike the classical case, however, where the total can be completely characterized by its parts, the state of larger quantum systems cannot always be described as the product of its parts. This property, known as entanglement, is best illustrated with an example: there exist no single qubit states ...
... Unlike the classical case, however, where the total can be completely characterized by its parts, the state of larger quantum systems cannot always be described as the product of its parts. This property, known as entanglement, is best illustrated with an example: there exist no single qubit states ...
Quantum Field Theory Frank Wilczek
... fundamental laws of electromagnetism could be expressed most simply in terms of elds lling space and time was of course brilliantly vindicated by Maxwell's mathematical theory. The concept of locality, in the crude form that one can predict the behavior of nearby objects without reference to dista ...
... fundamental laws of electromagnetism could be expressed most simply in terms of elds lling space and time was of course brilliantly vindicated by Maxwell's mathematical theory. The concept of locality, in the crude form that one can predict the behavior of nearby objects without reference to dista ...
Inhomogeneous boundary effects in semiconductor quantum wires
... inhomogeneous boundaries, i.e. wires whose widths are functions of distance along the length of the wire. We show that, in the adiabatic approximation (which assumes that the boundary patential fluctuation effects, or equivalently, the variations in the wire width, occur on a scale much larger than ...
... inhomogeneous boundaries, i.e. wires whose widths are functions of distance along the length of the wire. We show that, in the adiabatic approximation (which assumes that the boundary patential fluctuation effects, or equivalently, the variations in the wire width, occur on a scale much larger than ...
Physics Today - Portland State University
... relativity. Why quantum theory, a specifically nonrelativistic theory, should conspire to be consistent with relativity in this way is a deep mystery. To illustrate the other particularly interesting feature of the experiment sketched in figure 2, consider keeping a record of the results of repeated ...
... relativity. Why quantum theory, a specifically nonrelativistic theory, should conspire to be consistent with relativity in this way is a deep mystery. To illustrate the other particularly interesting feature of the experiment sketched in figure 2, consider keeping a record of the results of repeated ...
Gravitation and quantum interference experiments with neutrons
... a gravitationally induced phase shift. This neutron interferometer experiment was performed at the 2 MW University of Michigan Reactor, and the signal is based on the interference between coherently split and separated neutron de Broglie waves in the gravity potential. Another idea is to explore a u ...
... a gravitationally induced phase shift. This neutron interferometer experiment was performed at the 2 MW University of Michigan Reactor, and the signal is based on the interference between coherently split and separated neutron de Broglie waves in the gravity potential. Another idea is to explore a u ...
How Quantum Theory Helps us Explain
... particular circumstances and able to reason from them. But critics have objected that such an argument is genuinely explanatory only if its premises state what caused the phenomenon, where it is assumed that any cause of an instance of the phenomenon bears an asymmetric relation of causal influence ...
... particular circumstances and able to reason from them. But critics have objected that such an argument is genuinely explanatory only if its premises state what caused the phenomenon, where it is assumed that any cause of an instance of the phenomenon bears an asymmetric relation of causal influence ...
Coherent States
... Here I digress from work in progress—namely, a review of a paper by C. Y. She & H. Heffner1 , which was the first of several papers inspired by E. Arthurs & J. L. Kelly’s “On the simultaneous measurement of a pair of conjugate observables” (BSTJ 44, 725 (1965)); it is my intention to incorporate tha ...
... Here I digress from work in progress—namely, a review of a paper by C. Y. She & H. Heffner1 , which was the first of several papers inspired by E. Arthurs & J. L. Kelly’s “On the simultaneous measurement of a pair of conjugate observables” (BSTJ 44, 725 (1965)); it is my intention to incorporate tha ...
Classification of completely positive maps
... the microscopic world works. Without going into the full details of the remarkable range of quantum phenomena, to say the least the world of quantum mechanics is very strange and different from the “classical” world in which we live most directly. Famous and confirmed phenomena include particles tun ...
... the microscopic world works. Without going into the full details of the remarkable range of quantum phenomena, to say the least the world of quantum mechanics is very strange and different from the “classical” world in which we live most directly. Famous and confirmed phenomena include particles tun ...
General Relativity Needs No Interpretation
... highly abstract mathematical structure with no ‘obvious’ direct experiential analogue, when that abstract structure is being considered as a possible element of a physical theory. These examples suggest a way to characterize a metalinguistic interpretation of a physical theory as, in part, a mapping ...
... highly abstract mathematical structure with no ‘obvious’ direct experiential analogue, when that abstract structure is being considered as a possible element of a physical theory. These examples suggest a way to characterize a metalinguistic interpretation of a physical theory as, in part, a mapping ...
Relaxation dynamics of a quantum Brownian particle in an ideal gas
... state. The gas particles then do not interact with each other, but they influence the Brownian particle via two-body forces, which should be taken sufficiently short-ranged to permit a scattering theory description of the interaction processes. The corresponding effective equation of motion for the quan ...
... state. The gas particles then do not interact with each other, but they influence the Brownian particle via two-body forces, which should be taken sufficiently short-ranged to permit a scattering theory description of the interaction processes. The corresponding effective equation of motion for the quan ...
Complexity Limitations on Quantum Computation 1 Introduction
... For the rest of the paper, we will assume that the pairing function is implicitly used whenever we have a function of two or more arguments. We can also define many interesting counting classes using GapP functions. For this paper we consider the following classes. Definition 2.3 The class PP consis ...
... For the rest of the paper, we will assume that the pairing function is implicitly used whenever we have a function of two or more arguments. We can also define many interesting counting classes using GapP functions. For this paper we consider the following classes. Definition 2.3 The class PP consis ...