Closed timelike curves make quantum and classical computing
... It was once believed that CTCs would lead inevitably to logical inconsistencies such as the Grandfather Paradox. But in a groundbreaking 1991 paper, Deutsch [9] showed that this intuition fails, provided the physics of the CTC is quantum-mechanical. Deutsch’s insight was that a CTC should simply be ...
... It was once believed that CTCs would lead inevitably to logical inconsistencies such as the Grandfather Paradox. But in a groundbreaking 1991 paper, Deutsch [9] showed that this intuition fails, provided the physics of the CTC is quantum-mechanical. Deutsch’s insight was that a CTC should simply be ...
Elementary Particle Mixing for Maximum Channel Capacity in Measured Decays
... As information, particle identity is non-quantum, but the particle itself resides in a quantum state and undergoes the transformations of scattering and decay that are quantum mechanical. The stochastic nature of classical-quantum complementarity is best described by an ‘implied ensemble’ that invol ...
... As information, particle identity is non-quantum, but the particle itself resides in a quantum state and undergoes the transformations of scattering and decay that are quantum mechanical. The stochastic nature of classical-quantum complementarity is best described by an ‘implied ensemble’ that invol ...
PDF
... communication rests, admits to only two possible states: a classical on-off system must be in either state 0 or state 1, representing a single bit of information. Quantum mechanics is quite different. A two-level quantum system—the reader unfamiliar with basic quantum mechanics should consult the Ap ...
... communication rests, admits to only two possible states: a classical on-off system must be in either state 0 or state 1, representing a single bit of information. Quantum mechanics is quite different. A two-level quantum system—the reader unfamiliar with basic quantum mechanics should consult the Ap ...
What is “a world”
... What is ψ ? There is no sharp answer. Theoretical physicists are very flexible in adapting their tools, and no axiomization can keep up with them. But it is fair to say that there are two core ideas of quantum field theory. First: The basic dynamical degrees of freedom are operator functions of spa ...
... What is ψ ? There is no sharp answer. Theoretical physicists are very flexible in adapting their tools, and no axiomization can keep up with them. But it is fair to say that there are two core ideas of quantum field theory. First: The basic dynamical degrees of freedom are operator functions of spa ...
Paper
... unit cell. In contrast, even the strongest magnetic fields, near 100 T, can create only 1% of a flux quantum per unit cell in conventional solids. The development of synthetic magnetic fields makes it possible to explore the physics of both bosons and fermions in strong magnetic fields and to study ...
... unit cell. In contrast, even the strongest magnetic fields, near 100 T, can create only 1% of a flux quantum per unit cell in conventional solids. The development of synthetic magnetic fields makes it possible to explore the physics of both bosons and fermions in strong magnetic fields and to study ...
Chap 3.
... There is no restriction on the value of k. Thus a free particle, even in quantum mechanics, can have any non-negative value of the energy h̄2 k 2 E= ...
... There is no restriction on the value of k. Thus a free particle, even in quantum mechanics, can have any non-negative value of the energy h̄2 k 2 E= ...
fund_notes_up2 (new_version)
... the amount of discreetness of space. If h were equal to zero, then nature would be continuous and we could measure both position and momentum exactly. Experimentally it is not zero, so although nature is largely continuous, it is also a bit discrete, and therefore uncertain. 10 Wave Quantum Mechanic ...
... the amount of discreetness of space. If h were equal to zero, then nature would be continuous and we could measure both position and momentum exactly. Experimentally it is not zero, so although nature is largely continuous, it is also a bit discrete, and therefore uncertain. 10 Wave Quantum Mechanic ...
Fermi accelerator in atom optics
... The initial minimum uncertainty wavepacket delocalizes when the modulation depth exceeds the upper boundary l u of the localization window. In Fig. 5 we show the widths of the classical ~thick line! and the quantum-mechanical ~thin line! momentum distribution as a function of the modulation amplitud ...
... The initial minimum uncertainty wavepacket delocalizes when the modulation depth exceeds the upper boundary l u of the localization window. In Fig. 5 we show the widths of the classical ~thick line! and the quantum-mechanical ~thin line! momentum distribution as a function of the modulation amplitud ...
Relaxation dynamics of a quantum Brownian particle in an ideal gas
... the Fokker-Planck equation [32]. The situation is actually more complicated in the quantum case, since one is dealing with operators whose values can be estimated in a meaningful way only when suitable matrix elements are considered. We will argue that the quantum counterpart of the classical Fokker ...
... the Fokker-Planck equation [32]. The situation is actually more complicated in the quantum case, since one is dealing with operators whose values can be estimated in a meaningful way only when suitable matrix elements are considered. We will argue that the quantum counterpart of the classical Fokker ...
Quantum and Ecosystem Entropies
... Abstract: Ecosystems and quantum gases share a number of superficial similarities including enormous numbers of interacting elements and the fundamental role of energy in such interactions. A theory for the synthesis of data and prediction of new phenomena is well established in quantum statistical ...
... Abstract: Ecosystems and quantum gases share a number of superficial similarities including enormous numbers of interacting elements and the fundamental role of energy in such interactions. A theory for the synthesis of data and prediction of new phenomena is well established in quantum statistical ...
Homework No. 09 (Spring 2014) PHYS 530A: Quantum Mechanics II
... and using the lowering operator to construct the |1, 0i and |1, −1i states. The state |0, 0i was then constructed (to within a phase factor) as the state orthogonal to |1, 0i. (a) Repeat this exercise by beginning with the total angular momentum state |1, −1i and using the raising operator to constr ...
... and using the lowering operator to construct the |1, 0i and |1, −1i states. The state |0, 0i was then constructed (to within a phase factor) as the state orthogonal to |1, 0i. (a) Repeat this exercise by beginning with the total angular momentum state |1, −1i and using the raising operator to constr ...
In the early 1930s, the relativistic electron
... to quantum field theory. His idea was to sidestep the problem of divergences in quantum field theory – in his view due to the point-like interaction between fields – by considering only what he saw as measurable quantities (Miller, 1994, p. 97). Heisenberg's idea was to retain only basic elements of ...
... to quantum field theory. His idea was to sidestep the problem of divergences in quantum field theory – in his view due to the point-like interaction between fields – by considering only what he saw as measurable quantities (Miller, 1994, p. 97). Heisenberg's idea was to retain only basic elements of ...
