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No realistic wormholes from ghost-free scalar-tensor phantom dark energy
Kirill A. Bronnikov, Alexei A. Starobinsky
It is proved that no wormholes can be formed in viable scalar-tensor models of dark energy admitting its phantom-like () behaviour in cosmology, even in the presence of ele…
Reconstructing Dark Energy
Varun Sahni, Alexei Starobinsky
This review summarizes recent attempts to reconstruct the expansion history of the Universe and to probe the nature of dark energy. Reconstruction methods can be broadly classified…
Pointer states for primordial fluctuations in inflationary cosmology
C. Kiefer, I. Lohmar, D. Polarski +1
Primordial fluctuations in inflationary cosmology acquire classical properties through decoherence when their wavelengths become larger than the Hubble scale. Although decoherence…
Archeops In-flight Performance, Data Processing and Map Making
J. F. Macias-Perez, G. Lagache, B. Maffei +69
Archeops is a balloon--borne experiment widely inspired by the Planck satellite and by its High Frequency Instrument (HFI). It is mainly dedicated to measure the Cosmic Microwave B…