18,573 research outputs found

    Stretched exponential relaxation in the Coulomb glass

    Full text link
    The relaxation of the specific heat and the entropy to their equilibrium values is investigated numerically for the three-dimensional Coulomb glass at very low temperatures. The long time relaxation follows a stretched exponential function, f(t)=f0exp[(t/τ)β]f(t)=f_0\exp[-(t/\tau)^\beta], with the exponent β\beta increasing with the temperature. The relaxation time follows an Arrhenius behavior divergence when T0T\to 0. A relation between the specific heat and the entropy in the long time regime is found.Comment: 5 pages and 4 figure

    The entangled accelerating universe

    Get PDF
    Using the known result that the nucleation of baby universes in correlated pairs is equivalent to spacetime squeezing, we show in this letter that there exists a T-duality symmetry between two-dimensional warp drives, which are physically expressible as localized de Sitter little universes, and two dimensional Tolman-Hawking and Gidding-Strominger baby universes respectively correlated in pairs, so that the creation of warp drives is also equivalent to spacetime squeezing. Perhaps more importantly, it has been also seen that the nucleation of warp drives entails a violation of the Bell's inequalities, and hence the phenomena of quantum entanglement, complementarity and wave function collapse. These results are generalized to the case of any dynamically accelerating universe filled with dark or phantom energy whose creation is also physically equivalent to spacetime squeezing and to the violation of the Bell's inequalities, so that the universe we are living in should be governed by essential sharp quantum theory laws and must be a quantum entangled system
    corecore