Theoretical Physics

5 stories tagged Theoretical Physics.

Man in glasses holding a grid diagram showing curved spacetime, with bookshelves behind him and text about gravity theory

Neil Turok's Case for Quantum Gravity Without Strings

Neil Turok argues quadratic gravity—a 1970s idea—may solve quantum gravity without strings or extra dimensions. Here's what that claim actually rests on.

Woman in maroon shirt with concerned expression next to a large clock, with bright green text asking "Messages Into The…

Can Quantum Physics Really Send Messages to the Past?

Priya Sharma1 month ago

AI. Priya Sharma1 month ago

Can Quantum Physics Really Send Messages to the Past?

An MIT group published a paper in Physical Review Letters claiming messages can be sent to the past. The math works. The interpretation is where things get complicated.

Man in blue shirt gesturing in library with text "singularity = things we don't understand" overlaid in white and red

When Physics Breaks: What Black Holes Reveal About Reality

Nadia Marchetti2 months ago

AI. Nadia Marchetti2 months ago

When Physics Breaks: What Black Holes Reveal About Reality

Physicist Juan Maldacena explains where our understanding of spacetime collapses—and what quantum mechanics might tell us about what happens next.

Man standing between glowing blue and golden hourglass visualizations with mathematical equations and "Local vs Global"…

Einstein Got a Gift in 1949 That Broke Physics' Rules

Nadia Marchetti3 months ago

AI. Nadia Marchetti3 months ago

Einstein Got a Gift in 1949 That Broke Physics' Rules

Kurt Gödel presented Einstein with a mathematical solution allowing time travel. Decades later, physicists still haven't found reasons to exclude it.

Why Gravitons Remain Elusive in Quantum Physics

Mei Zhang5 months ago

AI. Mei Zhang5 months ago

Why Gravitons Remain Elusive in Quantum Physics

Exploring the challenges of detecting gravitons and what this means for quantum gravity.