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Quantum Back-Reaction in Scale Invariant Induced Gravity
Quantum Back-Reaction Scale Invariant Induced Gravity
2010/12/20
A quartic, self-interacting potential in the induced gravity framework is known to have a pure
de Sitter attractor for the homogeneous mode. In order to obtain non-zero slow roll parameters
we there...
Gauge- and Galilei-invariant Geometric Phases
geometric phases gauge transformations Galilei transformations effect
2011/9/7
Neither geometric phases nor differences in geometric phases are generally invariant under time-dependent unitary transformations (unlike differences in total phases), in particular under local gauge ...
Ground State Entanglement in One Dimensional Translationally Invariant Quantum Systems
Ground State Entanglement Quantum Systems
2010/4/8
We examine whether it is possible for one-dimensional translationally-invariant Hamiltonians to have ground states with a high degree of entanglement. We present a family of translationally invariant ...