Strings & branes is a research area within theoretical high-energy physics and quantum gravity that studies extended fundamental objects—one-dimensional strings and higher-dimensional branes—in frameworks such as string theory and M-theory. It analyzes their dynamics, interactions, and spectra using tools from quantum field theory, conformal field theory, and differential geometry, and explores their role in unifying gauge interactions and gravity. The field includes investigation of D-branes, worldsheet and worldvolume theories, dualities (e.g., T- and S-duality), holographic correspondences like AdS/CFT, and the non-perturbative structure of underlying theories, with implications for black hole physics, compactifications, and effective low-energy models.
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