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Physicists have developed a new, highly efficient method to simulate self-interacting dark matter—a type that collides with itself rather than normal matter. This interaction can dramatically heat and condense dark matter halos, altering their core structure in ways previous models struggled to capture. The breakthrough code is significantly faster and more precise than its predecessors, allowing complex simulations to run on standard laptops. This accessibility is expected to accelerate research into how self-interacting dark matter shapes the cosmos.
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