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Space Time Crystals

All articles tagged with #space time crystals

Space-time crystals as seeds for naked singularities and micro black holes, new theory suggests
space1 month ago

Space-time crystals as seeds for naked singularities and micro black holes, new theory suggests

A new theoretical study argues that a repeating pattern in space-time, called a space-time crystal, could mathematically give rise to naked singularities and microscopic black holes when general relativity is explored in higher dimensions. Using pen-and-paper methods and perturbation theory, the researchers derive analytic self-similar solutions that work in the limit of many dimensions, but in realistic finite dimensions the expressions require extra terms. Current numerical work only reaches up to about 14 dimensions, leaving a gap to fully connect the analytic results to a physical universe. The work shows mathematical possibility, not proof that such objects exist, revisiting Hawking’s historical debate about naked singularities and outlining future steps to bridge theory and numerics.

Revolutionary Space-Time Crystals Transform Optical Science
science-and-technology1 year ago

Revolutionary Space-Time Crystals Transform Optical Science

Researchers have developed photonic space-time crystals, which enhance light interaction and amplification, potentially revolutionizing optical information processing. These advanced materials, structured in three spatial dimensions and changing over time, allow precise control over light's behavior. The study, involving institutions like Karlsruhe Institute of Technology and Aalto University, demonstrates how these four-dimensional materials can be applied in technologies such as wireless communication and lasers. The findings, published in Nature Photonics, highlight the potential for these materials to amplify light across various frequencies, paving the way for new applications in optical and other physical systems.