Specific Models
Some special cases of quintessence are phantom energy, in which wq < −1, and k-essence (short for kinetic quintessence), which has a non-standard form of kinetic energy. If this type of energy were to exist, it would cause a big rip in the universe due to the growing energy density of dark energy which would cause the expansion of the universe to increase at a faster-than-exponential rate.
Read more about this topic: Quintessence (physics)
Famous quotes containing the words specific and/or models:
“Most parents arent even aware of how often they compare their children. . . . Comparisons carry the suggestion that specific conditions exist for parental love and acceptance. Thus, even when one child comes out on top in a comparison she is left feeling uneasy about the tenuousness of her position and the possibility of faring less well in the next comparison.”
—Marianne E. Neifert (20th century)
“Friends broaden our horizons. They serve as new models with whom we can identify. They allow us to be ourselvesand accept us that way. They enhance our self-esteem because they think were okay, because we matter to them. And because they matter to usfor various reasons, at various levels of intensitythey enrich the quality of our emotional life.”
—Judith Viorst (20th century)