KEK素粒子原子核研究所・理論セミナー（Jnanadeva Maharana教授 ）
Theories in higher spacetime dimensions (D>4) have been topics of research for several years. Moreover, there are models where the extra compact dimension might have large radius and we might discover new phenomena even at LHC. I shall discuss field theories in higher dimensions and derive analyticity property of scattering amplitude within the frame works of LSZ formalism. The analog of Froissart bound will be derived.