DURHAM, N.C. -- Scientists at Duke and Rutgers universities have developed a mathematical framework they say will enable astronomers to test a new five-dimensional theory of gravity that competes with ...

Does our universe have more than four dimensions -- four spatial dimensions plus time? According to some American scientists, the answer is yes. Their new theory of gravity is challenging Einstein's ...

Braneworld models propose that our four‐dimensional universe is a ‘brane’ residing within a higher-dimensional spacetime, while scalar field theories provide a versatile framework to construct and ...