Anthropic prediction for a large toy landscape
نویسندگان
چکیده
منابع مشابه
A Calculable Toy Model of the Landscape
Motivated by recent discussions of the string-theory landscape, we propose field-theoretic realizations of models with large numbers of vacua. These models contain multiple U(1) gauge groups, and can be interpreted as deconstructed versions of higher-dimensional gauge theory models with fluxes in the compact space. We find that the vacuum structure of these models is very rich, defined by param...
متن کاملSupersymmetry Breaking in the Anthropic Landscape
In this paper I attempt to address a serious criticism of the “Anthropic Landscape” and “Discretuum” approach to cosmology, leveled by Banks, Dine and Gorbatov. I argue that in this new and unfamiliar setting, the gauge Hierarchy may not favor low energy supersymmetry. 1 The Banks Dine Gorbatov Argument Let’s begin by reviewing a successful use of the anthropic principle. In 1987 Steven Weinber...
متن کاملThe Anthropic Landscape of String Theory
In this lecture I make some educated guesses, about the landscape of string theory vacua. Based on the recent work of a number of authors, it seems plausible that the lanscape is unimaginably large and diverse. Whether we like it or not, this is the kind of behavior that gives credence to the Anthropic Principle. I discuss the theoretical and conceptual issues that arise in developing a cosmolo...
متن کاملAnthropic Prediction of the Dark Matter Abundance
I use Bousso’s causal diamond measure to make a statistical prediction for the dark matter abundance, assuming an axion with a large decay constant fa ≫ 10 GeV. Using a crude approximation for observer formation, the prediction agrees well with observation: 25% of observers see less dark matter than we do while 75% of observers see more dark matter. Larger values of the dark matter ratio are di...
متن کاملPrediction of stable walking for a toy that cannot stand.
Previous experiments [M. J. Coleman and A. Ruina, Phys. Rev. Lett. 80, 3658 (1998)] showed that a gravity-powered toy with no control and that has no statically stable near-standing configurations can walk stably. We show here that a simple rigid-body statically unstable mathematical model based loosely on the physical toy can predict stable limit-cycle walking motions. These calculations add t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2007
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2007/10/010