12,061 research outputs found
Fuzzy finite element model updating of a laboratory wind turbine blade for structural modification detection
Peer reviewedPublisher PD
Quantum states and space-time causality
Space-time symmetries and internal quantum symmetries can be placed on equal
footing in a hyperspin geometry. Four-dimensional classical space-time emerges
as a result of a decoherence that disentangles the quantum and the space-time
degrees of freedom. A map from the quantum space-time to classical space-time
that preserves the causality relations of space-time events is necessarily a
density matrix.Comment: 9 pages, to appear in the Proceedings of the 2nd International
Symposium on Information Geometry and its Application
Matrix Inflation and the Landscape of its Potential
Recently we introduced an inflationary setup in which the inflaton fields are
matrix valued scalar fields with a generic quartic potential, M-flation. In
this work we study the landscape of various inflationary models arising from
M-flation. The landscape of the inflationary potential arises from the dynamics
of concentric multiple branes in appropriate flux compactifications of string
theory. After discussing the classical landscape of the theory we study the
possibility of transition among various inflationary models appearing at
different points on the landscape, mapping the quantum landscape of M-flation.
As specific examples, we study some two-field inflationary models arising from
this theory in the landscape.Comment: v1: 34 pages, 5 figures; v2: To be published in JCAP; v3: JCAP
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