Tags » General Physics

Trying to understand dark matter [CL]


We present some “back-of-the-envelope” calculations to try to understand cold dark matter, its searches, and extensions of the Standard Model. Some of the insights obtained from this exercise may be useful. 12 more words

Cosmology And Nongalactic Astrophysics

Dark Energy, Inflation, CMB Anisotropy and Polarization from Quantum Metric Fluctuations [CL]


We propose a model of cosmological evolution of the early and late Universe which is consistent with observational data and naturally explains the origin of inflation and dark energy (DE). 277 more words

Cosmology And Nongalactic Astrophysics

Constraining Parameters of Generalized Cosmic Chaplygin Gas in Loop Quantum Cosmology [CL]


We have assumed the FRW universe in loop quantum cosmology (LQC) model filled with the dark matter and the Generalized Cosmic Chaplygin gas (GCCG) type dark energy where dark matter follows the linear equation of state. 237 more words

Cosmology And Nongalactic Astrophysics

Accretion of Dark Energy onto Higher Dimensional Charged BTZ Black Hole [CL]


In this work, we have studied the accretion of $(n+2)$-dimensional charged BTZ black hole (BH). The critical point and square speed of sound have been obtained. 197 more words

Cosmology And Nongalactic Astrophysics

Remnants of my Tesla coil

My first year of high school I attempted to apply my cursory understanding of electromagnetism to one of the most notorious do-it-yourself projects available on the web: the creation of a functioning, high frequency Tesla coil entirely from scrap parts. 882 more words