We construct solitonic states in the OSp invariant string field theory, which are BRST invariant in the leading order of regularization parameter ǫ. We calculate the disk amplitudes using these solitonic states and show that they describe D-branes and ghost D-branes. e-mail: [email protected] e-mail: [email protected] e-mail: [email protected]

Dubovsky and Sibiryakov recently proposed a scenario in which particles of different species propagate with different speeds due to their direct couplings to ghost condensate. It was argued that this extended version of ghost condensate allows a gedanken experiment leading to violation of the generalized second law. However, in the original ghost condensate scenario, difference in propagation s...

The story of the sciences in the twentieth Century is one of a steady loss of certainty. Much of what was real and machine-like and objective and determinate at the start of the century, by mid-century was a phantom, unpredictable, subjective and indeterminate. What had defined science at the start of the century—its power to predict, its clear subject/object distinction—no longer defined it at...