Solution of the Lindblad equation for spin helix states arXiv
... superdiffusive nonequilibrium stationary states “spin helix states” (SHS), in analogy to phenomena in spin-orbit-coupled two-dimensional electron systems [4, 5, 6]. We focus on one-dimensional spin chains, which are of great current interest. However, it will transpire that analogous SHS will appear ...
... superdiffusive nonequilibrium stationary states “spin helix states” (SHS), in analogy to phenomena in spin-orbit-coupled two-dimensional electron systems [4, 5, 6]. We focus on one-dimensional spin chains, which are of great current interest. However, it will transpire that analogous SHS will appear ...
ModPhys IV Lecture 3
... Certain aspects have however been retained e.g. Electrons in an atom exist only in discrete states of definite energy, the stationary states Transitions between these states require the emission (or absorption of a photon. According to wave mechanics, electrons do not travel in well defined circular ...
... Certain aspects have however been retained e.g. Electrons in an atom exist only in discrete states of definite energy, the stationary states Transitions between these states require the emission (or absorption of a photon. According to wave mechanics, electrons do not travel in well defined circular ...
The measure of existence of a quantum world and the Sleeping
... experiment as a fair coin, without analysing it in detail. Wilson (2013) suggested that the nature of the coin might matter (he distinguished between a ‘random’ coin and a ‘mathematical’ coin, see §7) and since a particular (quantum) implementation of the fair coin is crucial for our analysis, we ha ...
... experiment as a fair coin, without analysing it in detail. Wilson (2013) suggested that the nature of the coin might matter (he distinguished between a ‘random’ coin and a ‘mathematical’ coin, see §7) and since a particular (quantum) implementation of the fair coin is crucial for our analysis, we ha ...
Some Quantum Operators with Discrete Spectrum but Classically
... virtues: While the first is undoubtedly the “simplest,” it gives a very bad bound on the high energy behavior of the eigenvalue distribution. For example, it shows Tr(eefH1) < Ctp3 for c small, while the exact behavior is O(tp3’* In t). In Section 2, we present the simple proof whose main ingredient ...
... virtues: While the first is undoubtedly the “simplest,” it gives a very bad bound on the high energy behavior of the eigenvalue distribution. For example, it shows Tr(eefH1) < Ctp3 for c small, while the exact behavior is O(tp3’* In t). In Section 2, we present the simple proof whose main ingredient ...
The hyperfine structure of the 1 3 g state of Na2
... coupling scheme is case b  S with b F ⫽214⫾50 MHz. Since this is a 3 兺 state and its spin–orbit splitting is zero, the low-N HFS pattern remains case b  S . The 1 3 ⌬ g state is a 3d ␦ Rydberg state38 and asymptotically dissociates to the 3s⫹3d atomic limit. The electronic configuration of the 1 3 ...
... coupling scheme is case b  S with b F ⫽214⫾50 MHz. Since this is a 3 兺 state and its spin–orbit splitting is zero, the low-N HFS pattern remains case b  S . The 1 3 ⌬ g state is a 3d ␦ Rydberg state38 and asymptotically dissociates to the 3s⫹3d atomic limit. The electronic configuration of the 1 3 ...
Antiresonance and interaction-induced localization in spin and qubit chains with defects
... It is of the order of the LDP bandwidth J . The localized state exists for |α| > 1/2. The reciprocal localization length Im θ2 = ln(2|α|) goes to zero as |α| → 1/2. As the BP band goes through the LDP band with varying J − g, the localized state first merges with the LDP band and disappears for α ...
... It is of the order of the LDP bandwidth J . The localized state exists for |α| > 1/2. The reciprocal localization length Im θ2 = ln(2|α|) goes to zero as |α| → 1/2. As the BP band goes through the LDP band with varying J − g, the localized state first merges with the LDP band and disappears for α ...
Closed timelike curves make quantum and classical computing equivalent
... It might be thought mysterious that nature ‘finds’ a fixed point r of F: how, one might ask, does nature do this? Does nature not have to find r before the CTC computation starts, so that, in some sense, running the computation is not even necessary? While these issues are admittedly mysterious, to us ...
... It might be thought mysterious that nature ‘finds’ a fixed point r of F: how, one might ask, does nature do this? Does nature not have to find r before the CTC computation starts, so that, in some sense, running the computation is not even necessary? While these issues are admittedly mysterious, to us ...
Quantum Phenomena in Condensed Phase
... lation and coherences in the representation of the density matrix, or “surface hopping” trajectories. We implement this on model condensed phase systems and compare results with a path-integral approach that is linearized in the forward and backward bath variables, developed and coded previously in ...
... lation and coherences in the representation of the density matrix, or “surface hopping” trajectories. We implement this on model condensed phase systems and compare results with a path-integral approach that is linearized in the forward and backward bath variables, developed and coded previously in ...
Path Integrals in Quantum Field Theory
... the configuration space that describes the state of the system at any given time. For quantum field theory, the configuration space is a Fock space where each vector represents the number of each type of particle with momentum k. The key to the whole thing, though, is that each path that the system ...
... the configuration space that describes the state of the system at any given time. For quantum field theory, the configuration space is a Fock space where each vector represents the number of each type of particle with momentum k. The key to the whole thing, though, is that each path that the system ...
ANTI-MATTER FROM PRIMORDIAL BLACK HOLES
... Do quantum dynamical evolution remain deterministic through classical singularities ? Is there an « other side » ? The Hamiltonian formulation generally serves as the royal road to quantum theory. But absence of background metric constraints, no external time. ...
... Do quantum dynamical evolution remain deterministic through classical singularities ? Is there an « other side » ? The Hamiltonian formulation generally serves as the royal road to quantum theory. But absence of background metric constraints, no external time. ...
E2-2004-4 M. I. Shirokov* DECAY LAW OF MOVING UNSTABLE
... Eq. (1) or the substitution t → t/γ used in Eq. (1) will be called Einstein dilation ED (in this respect see also Eq. (2.37) in [Mller, 1972]). Calculations of quantum probabilities |Ap (t)|2 and |A0 (t)|2 show that ED does not hold exactly. Numerical calculations were performed by Stefanovich (199 ...
... Eq. (1) or the substitution t → t/γ used in Eq. (1) will be called Einstein dilation ED (in this respect see also Eq. (2.37) in [Mller, 1972]). Calculations of quantum probabilities |Ap (t)|2 and |A0 (t)|2 show that ED does not hold exactly. Numerical calculations were performed by Stefanovich (199 ...
Bell's theorem
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Bell's theorem is a ‘no-go theorem’ that draws an important distinction between quantum mechanics (QM) and the world as described by classical mechanics. This theorem is named after John Stewart Bell.In its simplest form, Bell's theorem states:Cornell solid-state physicist David Mermin has described the appraisals of the importance of Bell's theorem in the physics community as ranging from ""indifference"" to ""wild extravagance"". Lawrence Berkeley particle physicist Henry Stapp declared: ""Bell's theorem is the most profound discovery of science.""Bell's theorem rules out local hidden variables as a viable explanation of quantum mechanics (though it still leaves the door open for non-local hidden variables). Bell concluded:Bell summarized one of the least popular ways to address the theorem, superdeterminism, in a 1985 BBC Radio interview: