The tachyon field is a hypothetical field that is expected to exist in string theory. This scalar field has a negative tension, and its energy density increases as the universe expands, which results in the acceleration of the universe's expansion.
The tachyon field is a hypothetical field that is expected to exist in string theory. This scalar field has a negative tension, and its energy density increases as the universe expands, which results in the acceleration of the universe's expansion.