Anisotropic Dark Energy from String Compactifications

Understand

We explore the cosmological dynamics of a minimalistic yet generic string-inspired model for multifield dark energy.

• Adopting a supergravity four-dimensional viewpoint, we motivate the model's structure arising from superstring compactifications involving a chiral superfield and a pure $U(1)$ gauge sector.
• The chiral sector gives rise to a pair of scalar fields, such as the axio-dilaton, which are kinetically coupled.
• However, the scalar potential depends on only one of them, further entwined with the vector field through the gauge kinetic function.