Quantum Computing With Closed Timelike Curves
... In the past, CTCs have mostly been studied from the perspective of GR Studying them from a computer science perspective leads us to ask new questions—like, how hard would Nature have to “work” to ensure causal consistency? Hopefully, leads to some new insights about causality, linearity of quantum m ...
... In the past, CTCs have mostly been studied from the perspective of GR Studying them from a computer science perspective leads us to ask new questions—like, how hard would Nature have to “work” to ensure causal consistency? Hopefully, leads to some new insights about causality, linearity of quantum m ...
Single shot imaging of trapped Fermi gas
... showing appearance of fluctuating vortices and center-ofmass fluctuations of attractive BEC have been reported recently [10]. ...
... showing appearance of fluctuating vortices and center-ofmass fluctuations of attractive BEC have been reported recently [10]. ...
Theoretische und Mathematische Grundlagen der Physik
... the drawback of being noncompact and for this reason one cannot expect that the values of the WLOs are given by Witten’s original formulae. Fortunately, there is at least one compact manifold for which Step 1 can also be carried out, namely the manifold M = S 2 × S 1 . In the second part of my talk ...
... the drawback of being noncompact and for this reason one cannot expect that the values of the WLOs are given by Witten’s original formulae. Fortunately, there is at least one compact manifold for which Step 1 can also be carried out, namely the manifold M = S 2 × S 1 . In the second part of my talk ...
Time-dependent quantum circular billiard
... Billiards are convenient models for the study of classical and quantum dynamics of non-integrable systems. They have been extensively studied in both experimental [1] and theoretical contexts [2,3]. A remarkable feature of particle motion in billiards is the dependence of the dynamics on the geometr ...
... Billiards are convenient models for the study of classical and quantum dynamics of non-integrable systems. They have been extensively studied in both experimental [1] and theoretical contexts [2,3]. A remarkable feature of particle motion in billiards is the dependence of the dynamics on the geometr ...
Quantum and classical statistics of the electromagnetic zero
... of field strength. The primary emphasis of this research program has been to determine to what extent classical physics plus a ZPF can reproduce the results of quantum mechanics (QM) and quantum electrodynamics (QED). Several interesting classical re-workings of quantum problems have been published. ...
... of field strength. The primary emphasis of this research program has been to determine to what extent classical physics plus a ZPF can reproduce the results of quantum mechanics (QM) and quantum electrodynamics (QED). Several interesting classical re-workings of quantum problems have been published. ...
Quantum Wires and Quantum Point Contacts
... If the edges are in an equilibrium, or there is no backscattering from contacts, then the potential difference between the edges is just the same as between the longitudinal contacts. Then each channel contributes to the “Hall” current as an ideal ballistic quantum wire. ...
... If the edges are in an equilibrium, or there is no backscattering from contacts, then the potential difference between the edges is just the same as between the longitudinal contacts. Then each channel contributes to the “Hall” current as an ideal ballistic quantum wire. ...
Atomic Orbitals - Stephen Berry
... stationary (constant E ) solutions of the quantum mechanical wave equation for matter waves have a factor e ~ l r i .u ~ I n other words, the functions representing all the stationary states of an electron (or of a complex system) contain a complex oscillating factor containing the time. If the syst ...
... stationary (constant E ) solutions of the quantum mechanical wave equation for matter waves have a factor e ~ l r i .u ~ I n other words, the functions representing all the stationary states of an electron (or of a complex system) contain a complex oscillating factor containing the time. If the syst ...
A Quantum Structure Description of the Liar Paradox
... dynamical and contextual processes that could throw some light on primitive dynamical and contextual processes encountered in the pre-material layer (e.g. spin processes)? Apart from these speculative but stimulating philosophical questions, we also would like to investigate further in which way our ...
... dynamical and contextual processes that could throw some light on primitive dynamical and contextual processes encountered in the pre-material layer (e.g. spin processes)? Apart from these speculative but stimulating philosophical questions, we also would like to investigate further in which way our ...
Path integrals in quantum mechanics
... have become quite popular because the quantization of gauge fields is much more intuitive and transparent in such a context. In part I of this book we introduce path integrals for the quantization of point particles, as opposed to the quantization of field theories. The former contains a finite numb ...
... have become quite popular because the quantization of gauge fields is much more intuitive and transparent in such a context. In part I of this book we introduce path integrals for the quantization of point particles, as opposed to the quantization of field theories. The former contains a finite numb ...
Path Integrals in Quantum Field Theory
... from the canonical formulation of quantum mechanics, using, for example, the timedependent Schrödinger equation. However, if one defines the amplitude associated with a given trajectory as eiS , then it is possible to derive the Schrödinger equation2 . We can even “derive” the classical principle ...
... from the canonical formulation of quantum mechanics, using, for example, the timedependent Schrödinger equation. However, if one defines the amplitude associated with a given trajectory as eiS , then it is possible to derive the Schrödinger equation2 . We can even “derive” the classical principle ...
Finite Element Method for Finite-Size Scaling in Quantum Mechanics
... of a system when the size tends to infinity but a theory that also gives us numerical methods4–11 capable of obtaining accurate results for infinite systems by studying the corresponding small systems. Recently, we have applied the FSS theory to quantum systems.12–21 In this approach, the finite siz ...
... of a system when the size tends to infinity but a theory that also gives us numerical methods4–11 capable of obtaining accurate results for infinite systems by studying the corresponding small systems. Recently, we have applied the FSS theory to quantum systems.12–21 In this approach, the finite siz ...
Semiclassical theory of helium atom
... orthohelium, respectively. Figure 4 depicts, as a representative case, the level diagram of parahelium. The helium states and energy levels can be classified as follows: (i) the ground state and bound singly excited states, (ii) doubly excited resonant states, and (iii) unbound continuum states at e ...
... orthohelium, respectively. Figure 4 depicts, as a representative case, the level diagram of parahelium. The helium states and energy levels can be classified as follows: (i) the ground state and bound singly excited states, (ii) doubly excited resonant states, and (iii) unbound continuum states at e ...
The capacity of the noisy quantum channel
... classically continuous variables such as energy, angular momentum and charge come in discrete units called quanta. This discrete character of quantum-mechanical systems such as photons, atoms, and spins allows them to register ordinary digital information. A leftcircularly polarized photon can encod ...
... classically continuous variables such as energy, angular momentum and charge come in discrete units called quanta. This discrete character of quantum-mechanical systems such as photons, atoms, and spins allows them to register ordinary digital information. A leftcircularly polarized photon can encod ...
Wissink P640 – Subatomic Physics I Fall 2007 Problem Set # 1
... both N N and ∆∆ states can couple up to I = 0, as well as higher isospins. The I = 0 state thus formed is anti-symmetric under interchange, as we showed in lecture (or you can easily show using Young Tableaux). And because these are systems of two identical fermions, the total wave function must als ...
... both N N and ∆∆ states can couple up to I = 0, as well as higher isospins. The I = 0 state thus formed is anti-symmetric under interchange, as we showed in lecture (or you can easily show using Young Tableaux). And because these are systems of two identical fermions, the total wave function must als ...
Verification of Concurrent Quantum Protocols by Equivalence
... and |ψi be stabilizer states and Stab(|φi), Stab(|ψi) be their stabilizer groups, it can be easily seen that: |φi = |ψi ⇐⇒ Stab(|φi) = Stab(|ψi) Therefore it suffices to show that Stab(|φi) ⊆ Stab(|ψi) and Stab(|φi) ⊇ Stab(|ψi), using independence checking approach, which results in the following pr ...
... and |ψi be stabilizer states and Stab(|φi), Stab(|ψi) be their stabilizer groups, it can be easily seen that: |φi = |ψi ⇐⇒ Stab(|φi) = Stab(|ψi) Therefore it suffices to show that Stab(|φi) ⊆ Stab(|ψi) and Stab(|φi) ⊇ Stab(|ψi), using independence checking approach, which results in the following pr ...
Document
... Degenerate Perturbation Theory Some interesting things happen to 1st order perturbation theory in multidimensional problems where there is usually degeneracy or several states with exactly the same energy owing to some symmetry. One immediate problem follows from Eq. (16) which gives the first order ...
... Degenerate Perturbation Theory Some interesting things happen to 1st order perturbation theory in multidimensional problems where there is usually degeneracy or several states with exactly the same energy owing to some symmetry. One immediate problem follows from Eq. (16) which gives the first order ...
Quantum Level Structures and Nonlinear Classical Dynamics
... indefinitely to and fro along the same path. The first point to notice is that Fig. 1a, at E = 2ω1 , shows just two simple periodic orbits, whereas the higher energy plots in Figs. 1b and 1c contain three. Second, the shape of the trajectory in Fig. 1a is dictated by the shapes of the two periodic o ...
... indefinitely to and fro along the same path. The first point to notice is that Fig. 1a, at E = 2ω1 , shows just two simple periodic orbits, whereas the higher energy plots in Figs. 1b and 1c contain three. Second, the shape of the trajectory in Fig. 1a is dictated by the shapes of the two periodic o ...