Quantum Theory: a Pragmatist Approach
... 1. Introduction. What is it to interpret quantum theory? Addressing this question, van Fraassen (1991) characterized the interpretative task as an attempt to say: “What is really going on, according to this theory?’ and “How could the world possibly be how this theory says it is?” This ties interpre ...
... 1. Introduction. What is it to interpret quantum theory? Addressing this question, van Fraassen (1991) characterized the interpretative task as an attempt to say: “What is really going on, according to this theory?’ and “How could the world possibly be how this theory says it is?” This ties interpre ...
Edge-mode superconductivity in a two
... varied (inset of Fig. 3b). Figure 3c shows the characteristic modulation of the widths of the Shapiro steps by the magnitude of the applied microwave field. Similar data near the CNP are presented in Supplementary Fig. 8. Having established the d.c. and a.c. Josephson effect in our InAs/ GaSb junctio ...
... varied (inset of Fig. 3b). Figure 3c shows the characteristic modulation of the widths of the Shapiro steps by the magnitude of the applied microwave field. Similar data near the CNP are presented in Supplementary Fig. 8. Having established the d.c. and a.c. Josephson effect in our InAs/ GaSb junctio ...
How to hide a secret direction
... on the spin-J and spin-(J − 1) subspaces, respectively. We first notice that any optimal POVM can be locally symmetrized by the action of the rotation group. The weights of every POVM element on each invariant subspace will remain untouched under this action. Hence, for our purposes we can now take ...
... on the spin-J and spin-(J − 1) subspaces, respectively. We first notice that any optimal POVM can be locally symmetrized by the action of the rotation group. The weights of every POVM element on each invariant subspace will remain untouched under this action. Hence, for our purposes we can now take ...
The Quantum Phases of Matter The Harvard community has made
... flavors of many-body quantum entanglement. I will organize the discussion by classifying the states by the nature of their excitation spectrum. Readers interested primarily in strange metals can skip ahead to Section 4. First, in Section 2, I will consider phases in which there is a gap to all excit ...
... flavors of many-body quantum entanglement. I will organize the discussion by classifying the states by the nature of their excitation spectrum. Readers interested primarily in strange metals can skip ahead to Section 4. First, in Section 2, I will consider phases in which there is a gap to all excit ...
The Homological Nature of Entropy
... Abstract: We propose that entropy is a universal co-homological class in a theory associated to a family of observable quantities and a family of probability distributions. Three cases are presented: (1) classical probabilities and random variables; (2) quantum probabilities and observable operators ...
... Abstract: We propose that entropy is a universal co-homological class in a theory associated to a family of observable quantities and a family of probability distributions. Three cases are presented: (1) classical probabilities and random variables; (2) quantum probabilities and observable operators ...
Direct characterization of quantum dynamics
... nature of a quantum process, without ever revealing the state of the system. In general, however, it is unclear if there is a fundamental relationship between QED and QPT, namely whether it is possible to completely characterize the quantum dynamics of arbitrary quantum systems using QED. And, provi ...
... nature of a quantum process, without ever revealing the state of the system. In general, however, it is unclear if there is a fundamental relationship between QED and QPT, namely whether it is possible to completely characterize the quantum dynamics of arbitrary quantum systems using QED. And, provi ...
- Philsci-Archive
... initial state of the system cannot be restored anymore because the correlational information has vanished on the microscopic level. (Ridderbos & Redhead 1998, 1256). In other words, when a system under study is in a quasi-equilibrium state the order has disappeared at the macroscopical level, but it ...
... initial state of the system cannot be restored anymore because the correlational information has vanished on the microscopic level. (Ridderbos & Redhead 1998, 1256). In other words, when a system under study is in a quasi-equilibrium state the order has disappeared at the macroscopical level, but it ...
Self-assembled quantum dots
... The chemical composition can be modified during the growth process, by shutting or opening effusion cells. For example, after deposition of several gallium arsenide (GaAs) monolayers one can follow with a different compound, e.g. aluminum arsenide (AlAs). Both the substrate and the deposited materia ...
... The chemical composition can be modified during the growth process, by shutting or opening effusion cells. For example, after deposition of several gallium arsenide (GaAs) monolayers one can follow with a different compound, e.g. aluminum arsenide (AlAs). Both the substrate and the deposited materia ...
the quantum vacuum
... physical vacuum as empty space and ending with the omnipresent vacuum of the unified field of all the laws of nature. The vacuum originally denoted space from which all matter, including air, has been evacuated (experiments of TORRICELLI and VON GUERICKE in the 17th century). This leads to the class ...
... physical vacuum as empty space and ending with the omnipresent vacuum of the unified field of all the laws of nature. The vacuum originally denoted space from which all matter, including air, has been evacuated (experiments of TORRICELLI and VON GUERICKE in the 17th century). This leads to the class ...
Scattering of Dirac Fermions in Barrier Geometries on the Surface of
... To see that they break inversion symmetry, we consider the inversion matrix P for this system: P = Γ3 , defined as such so that it sends the two-orbital, two-spin wavevector ψ = [|s, ↑i , |p, ↑i , |s, ↓i , |p, ↓i] to [|s, ↑i , − |p, ↑i , |s, ↓i , − |p, ↓i]. That is, the p orbitals are odd under a pa ...
... To see that they break inversion symmetry, we consider the inversion matrix P for this system: P = Γ3 , defined as such so that it sends the two-orbital, two-spin wavevector ψ = [|s, ↑i , |p, ↑i , |s, ↓i , |p, ↓i] to [|s, ↑i , − |p, ↑i , |s, ↓i , − |p, ↓i]. That is, the p orbitals are odd under a pa ...
pres
... High energy physics & Quintessence We address the model-building question in the framework of Super-gravity. The main purpose is to test what should be done in order to produce a satisfactory dark energy model ...
... High energy physics & Quintessence We address the model-building question in the framework of Super-gravity. The main purpose is to test what should be done in order to produce a satisfactory dark energy model ...
here.
... a fixed direction with fixed magnitude over time. For example, we can be in a classical state where Lz = 105 ~, Ly = 0, L x = 0. We can visualize this in terms of a rigid body that is rotating with constant angular speed about an axis pointing along ẑ. Quantum mechanically, the stationary states ma ...
... a fixed direction with fixed magnitude over time. For example, we can be in a classical state where Lz = 105 ~, Ly = 0, L x = 0. We can visualize this in terms of a rigid body that is rotating with constant angular speed about an axis pointing along ẑ. Quantum mechanically, the stationary states ma ...
Switching to a Sustainable Efficient Extraction Path ∗ Andrei V. Bazhanov
... “transition” curve linked to historical path. The pattern of saving must also be adjusted in order for us to be able to compare the consumption paths along the efficient and the transition curves. We report on a numerical example based on data of world oil extraction in order to estimate the gap betwe ...
... “transition” curve linked to historical path. The pattern of saving must also be adjusted in order for us to be able to compare the consumption paths along the efficient and the transition curves. We report on a numerical example based on data of world oil extraction in order to estimate the gap betwe ...
Through scattering theory with gun and camera: Coping with conventions
... This operator form implies that the momentum-space T-matrix elements must contain 共in the second term兲 both the delta function ␦共Ek⬘ − Ek兲 and the on-shell restriction. Forgetting this implication can lead to incorrect equations and procedures, such as simply writing Eq. 共31兲 in momentum space as ␦共 ...
... This operator form implies that the momentum-space T-matrix elements must contain 共in the second term兲 both the delta function ␦共Ek⬘ − Ek兲 and the on-shell restriction. Forgetting this implication can lead to incorrect equations and procedures, such as simply writing Eq. 共31兲 in momentum space as ␦共 ...
Entanglement and its Role in Shor`s Algorithm
... the single register state is mixed. The negativity turns out to be zero for both registers throughout the algorithm (except the measurement leaves the smaller register entangled, but this cannot be useful for the remaining classical steps of the algorithm). The entanglement between the registers bui ...
... the single register state is mixed. The negativity turns out to be zero for both registers throughout the algorithm (except the measurement leaves the smaller register entangled, but this cannot be useful for the remaining classical steps of the algorithm). The entanglement between the registers bui ...
Probability in Everettian quantum mechanics - Philsci
... state in which the particle is spin-up with respect to some axis and |↓p is the state in which it is spin-down, then if one measures the spin along this axis, the probability of getting the result “up” is |a|2 and the probability of getting the result “down” is |b|2. In the standard theory of quant ...
... state in which the particle is spin-up with respect to some axis and |↓p is the state in which it is spin-down, then if one measures the spin along this axis, the probability of getting the result “up” is |a|2 and the probability of getting the result “down” is |b|2. In the standard theory of quant ...