manifoldets

Manifoldets are a theoretical concept in physics, specifically within certain approaches to quantum gravity. They represent generalized geometric structures that can be thought of as a collection of lower-dimensional objects, or "branes," embedded within a higher-dimensional spacetime. Unlike traditional manifolds, which are smooth and continuous, manifoldets allow for the possibility of these embedded structures having discrete or "holey" properties. This discreteness is a key feature, as it aims to address certain challenges in reconciling general relativity with quantum mechanics.

The idea of manifoldets arises from the need to describe spacetime at very small scales, where quantum effects are expected to dominate. At these scales, the smooth, continuous picture of spacetime provided by general relativity might break down. Manifoldets offer a potential framework to describe such a scenario, where spacetime could be composed of fundamental building blocks that are not necessarily points in a continuous manifold. The "ets" suffix suggests a diminutiveness, hinting at these structures being fundamental or microscopic in nature.

Research into manifoldets is ongoing and highly speculative. They are not a mainstream concept but are explored in niche areas of theoretical physics seeking to go beyond current models. The mathematical tools required to fully understand and work with manifoldets are complex, involving advanced concepts from differential geometry and topology. Their ultimate validity and role in a complete theory of quantum gravity remain subjects of active investigation and debate within the physics community.