What Is an Advantage of Quintessence Over the Cosmological Constant

question 113

Multiple Choice

What is an advantage of quintessence over the cosmological constant as a description of dark energy?

• A) Einstein's reasoning in rejecting the cosmological constant still seems to be true today.
• B) The cosmological constant would have to have, from the beginning of the universe, the right value to give a flat universe now: an amazing coincidence. The quintessence model does not have this requirement.
• C) Quintessence is a well-established concept in physics, going back to ancient times, whereas the cosmological constant is a relatively new and untested concept.
• D) The quintessence model predicts the correct age for the universe; the cosmological constant does not.

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Definitions:

Invisible Hand

A term coined by Adam Smith to describe the self-regulating nature of the marketplace where individuals pursuing their own interest inadvertently benefit society at large.

Government Policies

Measures and regulations implemented by a government to influence economic, social, or administrative outcomes in the country.

Government Intervention

Actions taken by a government to influence or directly control economic activities, often to correct market failures or promote economic stability.

Promote Efficiency

To enhance the effectiveness and productivity with which resources are used, minimizing waste and maximizing output.