Time Travel and Warp Drives
... closed because you can return to your starting point in both space and time. It is called “timelike” because the time changes from point to point along the curve. The statement that a closed timelike curve exists is just a fancy way of saying that you have a time machine. It would seem that time tra ...
... closed because you can return to your starting point in both space and time. It is called “timelike” because the time changes from point to point along the curve. The statement that a closed timelike curve exists is just a fancy way of saying that you have a time machine. It would seem that time tra ...
The Einstein–Vlasov System/Kinetic Theory H˚ akan Andr´ easson
... matter in comparison to fluid models, although interest has increased in recent years. From a mathematical point of view there are fundamental advantages to using a kinetic description. In non-curved spacetimes kinetic theory has been studied intensively as a mathematical subject during several deca ...
... matter in comparison to fluid models, although interest has increased in recent years. From a mathematical point of view there are fundamental advantages to using a kinetic description. In non-curved spacetimes kinetic theory has been studied intensively as a mathematical subject during several deca ...
The Rutherford Memorial Lecture 1958 Reminiscences
... told me, his interest in these beautiful phenomena had been awakened when as a youth he was watching the appearance and disappearance of fogs as air currents ascended the Scottish mountain ridges and again descended in the valleys. A few weeks after the Cavendish Dinner I went up to Manchester to vi ...
... told me, his interest in these beautiful phenomena had been awakened when as a youth he was watching the appearance and disappearance of fogs as air currents ascended the Scottish mountain ridges and again descended in the valleys. A few weeks after the Cavendish Dinner I went up to Manchester to vi ...
Toward a scalable, silicon-based quantum computing architecture
... implications of teleportation, we will need to cover some background before returning to the subject in Section II-C. A striking example of the importance of quantum communication lies in the implementation of error-correction circuits. Quantum computations must make use of extremely robust error-co ...
... implications of teleportation, we will need to cover some background before returning to the subject in Section II-C. A striking example of the importance of quantum communication lies in the implementation of error-correction circuits. Quantum computations must make use of extremely robust error-co ...
Weak-Field General Relativity Compared with
... Allowing the potentials to vary with time yet still satisfying the Einstein equation, we arrive at the restriction that the zero component of the field f must be constant for all space and time. We use linearized versions of the equations for the Christoffel symbols, Riemann tensor, Ricci tensor and ...
... Allowing the potentials to vary with time yet still satisfying the Einstein equation, we arrive at the restriction that the zero component of the field f must be constant for all space and time. We use linearized versions of the equations for the Christoffel symbols, Riemann tensor, Ricci tensor and ...
Quantum Computation with Molecular Nanomagnets
... Europhysics Prize awarded to Sessoli, Gatteschi, Wernsdorfer, Barbara, and Friedman for their discovery of Quantum Phenomena in molecular nanomagnets (2002). At that time quantum phenomena were primarily studied by magnetization measurements in different conditions. Pulsed ESR experiments at very lo ...
... Europhysics Prize awarded to Sessoli, Gatteschi, Wernsdorfer, Barbara, and Friedman for their discovery of Quantum Phenomena in molecular nanomagnets (2002). At that time quantum phenomena were primarily studied by magnetization measurements in different conditions. Pulsed ESR experiments at very lo ...
Schutz A First Course in General Relativity(Second Edition).
... and rather more difficult to describe. I have tried to introduce differential geometry fully, not being content to rely only on analogies with curved surfaces, but I have left out subjects that are not essential to general relativity at this level, such as nonmetric manifold theory, Lie derivatives, ...
... and rather more difficult to describe. I have tried to introduce differential geometry fully, not being content to rely only on analogies with curved surfaces, but I have left out subjects that are not essential to general relativity at this level, such as nonmetric manifold theory, Lie derivatives, ...
Quantum Measurement and Control
... system variables. Unless the probability distribution is non-zero only for a single configuration, we say that it represents a state of uncertainty or incomplete knowledge. That is, in this book we adopt the position that probabilities are subjective: they represent degrees of certainty rather than ...
... system variables. Unless the probability distribution is non-zero only for a single configuration, we say that it represents a state of uncertainty or incomplete knowledge. That is, in this book we adopt the position that probabilities are subjective: they represent degrees of certainty rather than ...
7. Electromagnetic Waves 7A. Plane Waves Complex Notation
... • We will consider a wave coming in from the +z direction in the xz-plane, reflecting in the xz-plane, and refracting in the xz-plane • Call the wave number for the incoming, refracted, and reflected wave k, k', and k", respectively k • Call their constant vector E0, E'0, and E"0 respectively • The ...
... • We will consider a wave coming in from the +z direction in the xz-plane, reflecting in the xz-plane, and refracting in the xz-plane • Call the wave number for the incoming, refracted, and reflected wave k, k', and k", respectively k • Call their constant vector E0, E'0, and E"0 respectively • The ...
Quantum computation with two-electron spins in
... entanglement in its functioning and with them offer pathways to solving problems that are too hard or complex to even the best classical computers built today. The implementation of a large-scale working quantum computer could bring about a change in our society rivaling the one started by the digit ...
... entanglement in its functioning and with them offer pathways to solving problems that are too hard or complex to even the best classical computers built today. The implementation of a large-scale working quantum computer could bring about a change in our society rivaling the one started by the digit ...
Electrically driven flow near a colloidal particle close to an electrode
... ≈ If ‚∆φ). This scaling result has tremendous implications for experimental interpretation because under typical conditions the current density and applied potential cannot simultaneously be held constant with respect to time. Consequently, measurements in the same cell at different times may yield ...
... ≈ If ‚∆φ). This scaling result has tremendous implications for experimental interpretation because under typical conditions the current density and applied potential cannot simultaneously be held constant with respect to time. Consequently, measurements in the same cell at different times may yield ...
Quantum electrodynamics with 1D artificial atoms
... a robust platform for realizing a 1D atom, and are the subject of theoretical and experimental investigations in this thesis. We use finite element method in 3D to calculate the local density of states (LDOS) in photonic-crystal membranes. The detailed spatial maps show strong inhibition of LDOS in ...
... a robust platform for realizing a 1D atom, and are the subject of theoretical and experimental investigations in this thesis. We use finite element method in 3D to calculate the local density of states (LDOS) in photonic-crystal membranes. The detailed spatial maps show strong inhibition of LDOS in ...
Polynomial-Time Algorithms for Prime Factorization and Discrete
... [Hartmanis and Simon, 1974; Vergis, Steiglitz, and Dickinson, 1986]. As far as we know, the precision possible in quantum state manipulation is dictated not by fundamental physical laws but by the properties of the materials from which and the architecture with which a quantum computer is built. It ...
... [Hartmanis and Simon, 1974; Vergis, Steiglitz, and Dickinson, 1986]. As far as we know, the precision possible in quantum state manipulation is dictated not by fundamental physical laws but by the properties of the materials from which and the architecture with which a quantum computer is built. It ...
Qualification Exam: Classical Mechanics Name: , QEID#91111463: October, 2014
... A ball, mass m, hangs by a massless string from the ceiling of a car in a passenger train. At time t the train has velocity ~v and acceleration ~a in the same direction. What is the angle that the string makes with the vertical? Make a sketch which clearly indicates the relative direction of deflect ...
... A ball, mass m, hangs by a massless string from the ceiling of a car in a passenger train. At time t the train has velocity ~v and acceleration ~a in the same direction. What is the angle that the string makes with the vertical? Make a sketch which clearly indicates the relative direction of deflect ...
Unconditionally Secure Quantum Signatures
... digital signature algorithm (DSA) [19] and the elliptic curve digital signature algorithm (ECDSA) [20], which have been the standard in the U.S. since 1998. Although slightly different from RSA encryption, the general principle is the same, with security derived from the assumed computational diffic ...
... digital signature algorithm (DSA) [19] and the elliptic curve digital signature algorithm (ECDSA) [20], which have been the standard in the U.S. since 1998. Although slightly different from RSA encryption, the general principle is the same, with security derived from the assumed computational diffic ...
1. Theoretical studies of anomalous particle transport
... instance Cq = 0.45 and D/eff = 0.4. In DIII-D also [8], most of the density profiles can be reproduced using an anomalous pinch term based on the adiabatic invariants approach. There is less evidence for a correlation between the density profile and the temperature gradient, in particular because ...
... instance Cq = 0.45 and D/eff = 0.4. In DIII-D also [8], most of the density profiles can be reproduced using an anomalous pinch term based on the adiabatic invariants approach. There is less evidence for a correlation between the density profile and the temperature gradient, in particular because ...
Bohr–Einstein debates
The Bohr–Einstein debates were a series of public disputes about quantum mechanics between Albert Einstein and Niels Bohr. Their debates are remembered because of their importance to the philosophy of science. An account of the debates was written by Bohr in an article titled ""Discussions with Einsteinon Epistemological Problems in Atomic Physics"". Despite their differences of opinion regarding quantum mechanics, Bohr and Einstein had a mutual admiration that was to last the rest of their lives.The debates represent one of the highest points of scientific research in the first half of the twentieth century because it called attention to an element of quantum theory, quantum non-locality, which is absolutely central to our modern understanding of the physical world. The consensus view of professional physicists has been that Bohr proved victorious, and definitively established the fundamental probabilistic character of quantum measurement.