Dark energy

In physical cosmology and astronomy, dark energy is an unknown form of energy which is hypothesized to permeate all of space, tending to accelerate the expansion of the universe. Dark energy is the most accepted hypothesis to explain the observations since the 1990s indicating that the universe is expanding at an accelerating rate. Assuming that the standard model of cosmology is correct, the best current measurements indicate that dark energy contributes 68.3% of the total energy in the present-day observable universe. The mass–energy of dark matter and ordinary (baryonic) matter contribute 26.8% and 4.9%, respectively, and other components such as neutrinos and photons contribute a very small amount. Again on a mass–energy equivalence basis, the density of dark energy (~ 7 × 10⁻³⁰ g/cm³) is very low, much less than the density of ordinary matter or dark matter within galaxies. However, it comes to dominate the mass–energy of the universe because it is uniform across space.

Two proposed forms for dark energy are the cosmological constant, a constant energy density filling space homogeneously, and scalar fields such as quintessence or moduli, dynamic quantities whose energy density can vary in time and space. Contributions from scalar fields that are constant in space are usually also included in the cosmological constant. The cosmological constant can be formulated to be equivalent to vacuum energy. Scalar fields that do change in space can be difficult to distinguish from a cosmological constant because the change may be extremely slow.

Dark Energy (album)

Dark Energy is the debut album of Indiana producer Jlin, released in 2015 by Planet Mu. It received acclaim from critics, and was named the best album of 2015 by The Wire and The Quietus.

Critical reception

Dark Energy received universal acclaim from music critics.AllMusic called it "simply one of the most compelling debut albums of 2015," describing it as "tense, thrilling, and a bit frightening."The Quietus wrote that "In its breadth of ambition and stunningly realised sounds, Dark Energy delivers more than just a new twist on an established style [...] it maps out an inspiring and tantalising glimpse of electronic music's future." Referring to the producer's roots in the Chicago dance style known as footwork, The Guardian wrote "Jlin is an artist who belongs to her genre, but has an eye on where it could go next." Resident Advisor stated that "Jlin has plenty to say, and she has a remarkably strong and distinctive voice with which to say it."

Accolades

Track listing

Credits