"This work is a step toward understanding how quantum mechanics and gravity work together, a major unsolved problem in ...

Looking to extend his relativistic theory of gravity, Einstein specifies the tensor and field equations defining the spacetime curvature of a new Unified Field Theory in the 1940s.

During the latter part of the 20th century, string theory was put forward as a unifying theory of physics foundations. String theory has not, however, fulfilled expectations. That is why we are of the ...

A new method to analyze gravitational-wave data could transform how we study some of the universe's most extreme events—black ...

One of the most impressive things about Einstein's 1915 theory of gravity, general relativity, is just how many incredible cosmic objects its central equations have predicted.

By the way, the Einstein field equations are pluralized because these tensors are multi-part objects–it’s really a set of 10 partial differential equations.

Beginning from Einstein’s field equations, Ogonowski reveals their ability to describe all known physical interactions, including those described by classical electromagnetism.

At cosmological scales, Albert Einstein’s theory of general relativity has given scientists an immensely accurate blueprint ...

Einstein's theory of gravity—general relativity—has been very successful for more than a century. However, it has theoretical shortcomings. This is not surprising: the theory predicts its own ...