Conductance-peak height correlations for a Coulomb
... from random-matrix theory 共RMT兲,1 both without magnetic field and in the presence of a time-reversal symmetry breaking magnetic field.2,3 According to random-matrix theory, wave functions in a chaotic quantum dot have a universal distribution, independent of details of the dot’s shape or mean free p ...
... from random-matrix theory 共RMT兲,1 both without magnetic field and in the presence of a time-reversal symmetry breaking magnetic field.2,3 According to random-matrix theory, wave functions in a chaotic quantum dot have a universal distribution, independent of details of the dot’s shape or mean free p ...
Cryptography.ppt - 123SeminarsOnly.com
... Current computers will be replaced in the near future with quantum computers, which exploit the properties of ...
... Current computers will be replaced in the near future with quantum computers, which exploit the properties of ...
Quantum Chaos
... What are the appropriate quantum observables to detect the regular or chaotic classical behaviour of the system? More precisely, how does the regular or chaotic classical behaviour translate in the energy levels and eigenstates of the (bound) system? For an open system, in the decay rates, in the ...
... What are the appropriate quantum observables to detect the regular or chaotic classical behaviour of the system? More precisely, how does the regular or chaotic classical behaviour translate in the energy levels and eigenstates of the (bound) system? For an open system, in the decay rates, in the ...
Die Naturwissenschaften 1935
... following. It accepts all possible variables from the classical model and declares each to be directly measurable, even with arbitrary accuracy, as long as it is considered in isolation. If, after a suitably chosen, restricted number of measurements, a maximal knowledge has been obtained as allowed ...
... following. It accepts all possible variables from the classical model and declares each to be directly measurable, even with arbitrary accuracy, as long as it is considered in isolation. If, after a suitably chosen, restricted number of measurements, a maximal knowledge has been obtained as allowed ...
Three Quantum Algorithms to Solve 3-SAT
... operator which modifies the energy associated with the membrane. In [21] also Quantum Register Machines (QRMs, for short) have been introduced. It has been shown that they are able to simulate any classical (deterministic) register machine, and hence they are (at least) Turing complete. In this pape ...
... operator which modifies the energy associated with the membrane. In [21] also Quantum Register Machines (QRMs, for short) have been introduced. It has been shown that they are able to simulate any classical (deterministic) register machine, and hence they are (at least) Turing complete. In this pape ...
Mutually unbiased bases, orthogonal Latin squares, and hidden
... each number exactly once. Two Latin squares, A = 关Aij兴 and B = 关Bij兴, are orthogonal if all ordered pairs 共Aij , Bij兲 are distinct. There are at most d − 1 OLSs and this set is called complete. The existence of L OLSs is equivalent to the existence of a combinatorial design called a net with L + 2 r ...
... each number exactly once. Two Latin squares, A = 关Aij兴 and B = 关Bij兴, are orthogonal if all ordered pairs 共Aij , Bij兲 are distinct. There are at most d − 1 OLSs and this set is called complete. The existence of L OLSs is equivalent to the existence of a combinatorial design called a net with L + 2 r ...
The Dirac Field - SCIPP - University of California, Santa Cruz
... Now we want to write momentum space expansions of the spinor fields, analogous to those for scalar fields. Suppose we have operators a, a† which obey the anticommutation relations: {a, a† } = 1; {a, a} = 0; {a† , a† } = 0 Then construct the “number operator" N = a† a and the state |0i by the conditi ...
... Now we want to write momentum space expansions of the spinor fields, analogous to those for scalar fields. Suppose we have operators a, a† which obey the anticommutation relations: {a, a† } = 1; {a, a} = 0; {a† , a† } = 0 Then construct the “number operator" N = a† a and the state |0i by the conditi ...
On the Explanation for Quantum Statistics
... account, when the two molecules are of the same gas, although (according to naive gas-theoretical views) di¤usion takes place then too, but unnoticeably to us, because all the particles are alike. The modern view [of quantum mechanics] solves this paradox by declaring that in the second case there i ...
... account, when the two molecules are of the same gas, although (according to naive gas-theoretical views) di¤usion takes place then too, but unnoticeably to us, because all the particles are alike. The modern view [of quantum mechanics] solves this paradox by declaring that in the second case there i ...
Shamsul Kaonain
... Einstein's theory of relativity. The resolution of this problem turns out to hinge on whether it is possible to clone an unknown quantum state, that is, construct a copy of a quantum state. Cloning turns out not to be possible in general in quantum mechanics. This no cloning theorem , discovered in ...
... Einstein's theory of relativity. The resolution of this problem turns out to hinge on whether it is possible to clone an unknown quantum state, that is, construct a copy of a quantum state. Cloning turns out not to be possible in general in quantum mechanics. This no cloning theorem , discovered in ...
Lecture 23
... power fed into it, and can therefore respond with a more powerful signal. The key point is that the amplifier must be able to convert the input power into the frequency determined by the signal. This is usually done using some kind of feedback. Lasers work according to the same sort of idea. The ide ...
... power fed into it, and can therefore respond with a more powerful signal. The key point is that the amplifier must be able to convert the input power into the frequency determined by the signal. This is usually done using some kind of feedback. Lasers work according to the same sort of idea. The ide ...
Path Integrals in Quantum Mechanics
... The conventional formulation of quantum mechanics as it is taught to students is based on the Schrödinger equation. This is in some contrast to the actual situation in theoretical physics, where all modern developments make extensive use of the path integral formalism, in particular in modern field ...
... The conventional formulation of quantum mechanics as it is taught to students is based on the Schrödinger equation. This is in some contrast to the actual situation in theoretical physics, where all modern developments make extensive use of the path integral formalism, in particular in modern field ...
Full text in PDF form
... In this paper, we also consider the issue of causality at the Planck scale in the framework of causal sets, although our results do not promote this aspect as decisively as in [12]. In our opinion, the very concept of causality makes sense in the quasi-classical limit, in relation with the fact that ...
... In this paper, we also consider the issue of causality at the Planck scale in the framework of causal sets, although our results do not promote this aspect as decisively as in [12]. In our opinion, the very concept of causality makes sense in the quasi-classical limit, in relation with the fact that ...
Anekant and modern Physics
... different times as shown by the scientist Heisenberg in the famous uncertainty principle which states that it is impossible to simultaneously determine the precise position and momentum of a particle. This is clear from the famous two-slit experiment which is the backbone of quantum mechanics and pa ...
... different times as shown by the scientist Heisenberg in the famous uncertainty principle which states that it is impossible to simultaneously determine the precise position and momentum of a particle. This is clear from the famous two-slit experiment which is the backbone of quantum mechanics and pa ...
Quantum Mechanical Path Integrals with Wiener Measures for all
... This fact explains how yet another expression, involving Wiener measures without drift and the function H(p, q) representing the Hamiltonian, can be valid insofar as the leading term of the stationary-phase approximation is concerned, (ir ) ]. since in that approximation both H and h are equivalent ...
... This fact explains how yet another expression, involving Wiener measures without drift and the function H(p, q) representing the Hamiltonian, can be valid insofar as the leading term of the stationary-phase approximation is concerned, (ir ) ]. since in that approximation both H and h are equivalent ...
5. Quantum Field Theory (QFT) — QED Quantum Electrodynamics
... final state antiparticle, going into the future, but fermion-arrow enters the diagram ...
... final state antiparticle, going into the future, but fermion-arrow enters the diagram ...
The Physical World as a Virtual Reality
... from invisible fields in empty space to satisfy equations about imaginary quantities. Physics stopped trying to make sense of its findings some time ago, and the effects are evident: “How unusual it is for three decades to pass without major progress in fundamental physics? Even if we look back more ...
... from invisible fields in empty space to satisfy equations about imaginary quantities. Physics stopped trying to make sense of its findings some time ago, and the effects are evident: “How unusual it is for three decades to pass without major progress in fundamental physics? Even if we look back more ...