Sub-Critical Closed String Field Theory in D Less Than 26

We construct the second quantized action for sub-critical closed string field theory with zero cosmological constant in dimensions $2 \leq D < 26$, generalizing the non-polynomial closed string field theory action proposed by the author and the Kyoto and MIT groups for $D = 26$. The proof of gauge invariance is considerably complicated by the presence of the Liouville field $\phi$ and the non-polynomial nature of the action. However, we explicitly show that the polyhedral vertex functions obey BRST invariance to all orders. By point splitting methods, we calculate the anomaly contribution due to the Liouville field, and show in detail that it cancels only if $D - 26 + 1 + 3 Q ^ 2 = 0$, in both the bosonized and unbosonized polyhedral vertex functions. We also show explicitly that the four point function generated by this action reproduces the shifted Shapiro-Virasoro amplitude found from $c=1$ matrix models and Liouville theory in two dimensions. LATEX file.Comment: 28 pages, CCNY-HEP-93-

Michio Kaku: as the golden age of silicon comes to an end, Silicon Valley risks becoming another rust belt

The expected arrival of quantum computers heralds the end of the silicon era, an event that may lead to the disappearance of Silicon Valley as we know it. This is just one of the many changes that will likely be caused by the technological advances expected over the next decades. Michio Kaku, theoretical physicist and futurist, discussed some of his predictions in a brief Q&A with LSE Business Review’s managing editor, Helena Vieira, during the World Economic Forum’s Great Narrative meeting in Dubai

Reading the Mind of God

Recently, a revolutionary new theory has shaken the foundations of modern physics, introducing bizarre new concepts such as higher dimensions, parallel universes, and the multiverse into science. Vigorously opposed by the Old Guard in physics, it has since become the leading candidate for a "theory of everything" which will allow us to "read the mind of God," as Einstein hoped. Einstein spent his last 30 years struggling to find a single theory which would unify all physical laws, much like his equation E = mc2 united matter and energy. He failed. But many physicists now believe that they might have it. It is called string theory or M-theory, and postulates that all the particles, atoms, molecules, etc. in the universe are nothing but musical notes on vibrating strings or membranes. If true, it means that physics represents the beautiful harmonies of nature, that chemistry represents the melodies played on these strings, and the universe is a symphony of strings. It would also mean that the "mind of God" is cosmic music resonating through 11 dimensional hyperspace. The theory also melds Buddhist and Christian thinking. Buddhists believe in a timeless universe, a 1\irvana with no beginning or end. But Judeo-Christian thinking is based on Genesis, a single moment of Creation. But either the universe had a beginning, or it didn't. There is no middle ground. Until now. In this new theory, universes are constantly being born in an ocean of 11 dimensional hyperspace or Nirvana, like bubbles floating in the air. Hence, we have a beautiful melding of these two theories. In addition, the question now being debated by physicists is: what lies in these other universes? Can we ever reach them? Is there life on these universes? Is there a clone of myself existing in these parallel universes

Ultra-violet Behavior of Bosonic Quantum Membranes

We treat the action for a bosonic membrane as a sigma model, and then compute quantum corrections by integrating out higher membrane modes. As in string theory, where the equations of motion of Einstein's theory emerges by setting $\beta = 0$, we find that, with certain assumptions, we can recover the equations of motion for the background fields. Although the membrane theory is non-renormalizable on the world volume by power counting, the investigation of the ultra-violet behavior of membranes may give us insight into the supersymmetric case, where we hope to obtain higher order M-theory corrections to 11 dimensional supergravity.Comment: 25 pages, Latex, no figure

The future of the mind: the scientific quest to understand, enhance, and empower the mind

Michio Kaku, the New York Times bestselling author of Physics of the Impossible and Physics of the Future tackles the most fascinating and complex object in the known universe: the human brain. The Future of the Mind brings a topic that once belonged solely to the province of science fiction into a startling new reality. This scientific tour de force unveils the astonishing research being done in top laboratories around the world—all based on the latest advancements in neuroscience and physics—including recent experiments in telepathy, mind control, avatars, telekinesis, and recording memories and dreams. The Future of the Mind is an extraordinary, mind-boggling exploration of the frontiers of neuroscience. Dr. Kaku looks toward the day when we may achieve the ability to upload the human brain to a computer, neuron for neuron; project thoughts and emotions around the world on a brain-net; take a “smart pill” to enhance cognition; send our consciousness across the universe; and push the very limits of immortality

Physics of the Future: How Science Will Shape Human Destiny and Our Daily Lives By The Year 2100

Explains how science will shape human destiny and everyone\u27s daily life by the year 2100. Kaku gives a picture of the coming century based on interviews with over three hundred of the world\u27s top scientists who are already inventing the future in their labs.https://scholar.dominican.edu/cynthia-stokes-brown-books-big-history/1088/thumbnail.jp