Heap-based algorithm and one-dimensional expanding Universe

Evolution of Information and Complexity in an Ever-Expanding Universe

Using the usual definitions of information and entropy in quantum gravity and statistical mechanics and the existing views about the relation between information and complexity, we examine the evolution of complexity in an ever expanding universe.

Evolution of the Power Spectrum and the Self-similarity in the Expanding One-dimensional Universe

We have investigated time evolutions of power spectra of density fluctuations for long time after the first appearance of caustics in the expanding onedimensional universe. It is found that when an initial power spectrum is sale-free with a power index n, a self-similarity of the time evolution of the power spectrum is achieved. We find that the power spectrum can be separated roughly into thre...

Gott-Kaiser-Stebbins (GKS) effect in an accelerated expanding universe

Wewanttofindthecosmologicalconstantinfluenceoncosmicmicrowavebackground(CMB)temperatureduetomovinglinearcosmicstrings.Usingthespace-timemetricofalinearcosmicstringinanacceleratedexpandinguniverse,theGott-Kaiser Stebbins(GKS)effect,asanimportantmechanisminproducingtemperaturediscontinuityinthe(CMB),isconsidered;then,itsmodificationduetotheeffectofthecosmologicalconstantiscalculated.Theresultshowsthat...

Dark Matter in a One-dimensional Universe

— A computer code to simulate temporal evolution of overdensities in a one-dimensional Universe is presented for didactic purposes. The formation of large scale structures in this one-dimensional universe can be studied both in matter or radiation dominated eras. Since large scale structures are already observed at z ≥ 7, primordial dark matter overdensities δDM which are 90 times larger than t...

Expanding Universe , Shrinking View