Comment: A theoretical physicist would probably be able to give a better

(See in situ)

In reply to comment: It's over my head too (see in situ)

A theoretical physicist would probably be able to give a better

answer, but after some reading, this is what I gather:

(Note: I've never really delved too deeply into string theory on account that it doesn't make any predictions - that I know of - that can be tested experimentally.)

Assuming the wiki page is accurate, the holographic principle states that the entropy of a object is proportional to its surface area (rather than its volume - which would be more intuitive). Since the entropic information of a classical 3D object is contained on a 2D surface, I assume this is where the name holographic principle is derived.

In any case, (apparently) the properties of a black hole can be calculated by considering the area of its event horizon (as prescribed by the holographic principle). The researchers made such calculations. In addition, an energy calculation on a related model system (neglecting gravitational potential energy) was performed. Taking these different computational angles on the related models produced results that agreed.

This suggests that the mathematical descriptions used are consistent with each other - which seems to have left proponents of string theory feeling somewhat vindicated.

My work is primarily in quantum physics applied to chemistry.