Extra dimensions
Welcome to the article about Extra dimensions, a topic that is of utmost importance today. Extra dimensions is a relevant topic that deserves to be explored in depth to understand its implications and its impact on different aspects of daily life. Throughout this article, we will explore different perspectives and approaches around Extra dimensions, analyzing its relevance in different contexts and in different areas of society. From its influence on personal life to its impact in the professional field, Extra dimensions is a topic that never ceases to generate debate and discussion, and that is why in this article we will delve into its study to expand our knowledge and understanding of it. .
In physics, extra dimensions are proposed additional space or time dimensions beyond the (3 + 1) typical of observed spacetime, such as the first attempts based on the Kaluza–Klein theory. Among theories proposing extra dimensions are:[1]
- Large extra dimension, mostly motivated by the ADD model, by Nima Arkani-Hamed, Savas Dimopoulos, and Gia Dvali in 1998, in an attempt to solve the hierarchy problem. This theory requires that the fields of the Standard Model are confined to a four-dimensional membrane, while gravity propagates in several additional spatial dimensions that are large compared to the Planck scale.[2]
- Warped extra dimensions, such as those proposed by the Randall–Sundrum model (RS), based on warped geometry where the universe is a five-dimensional anti-de Sitter space and the elementary particles except for the graviton are localized on a (3 + 1)-dimensional brane or branes.[3]
- Universal extra dimension, proposed and first studied in 2000, assume, at variance with the ADD and RS approaches, that all fields propagate universally in extra dimensions.
- Multiple time dimensions, i.e. the possibility that there might be more than one dimension of time, has occasionally been discussed in physics and philosophy, although those models have to deal with the problem of causality.
References
- ^ Rizzo, Thomas G. (2004). "Pedagogical Introduction to Extra Dimensions". SLAC Summer Institute. arXiv:hep-ph/0409309. Bibcode:2004hep.ph....9309R.
- ^ For a pedagogical introduction, see M. Shifman (2009). Large Extra Dimensions: Becoming acquainted with an alternative paradigm. Crossing the boundaries: Gauge dynamics at strong coupling. Singapore: World Scientific. arXiv:0907.3074. Bibcode:2010IJMPA..25..199S. doi:10.1142/S0217751X10048548.
- ^ Randall, Lisa; Sundrum, Raman (1999). "Large Mass Hierarchy from a Small Extra Dimension". Physical Review Letters. 83 (17): 3370–3373. arXiv:hep-ph/9905221. Bibcode:1999PhRvL..83.3370R. doi:10.1103/PhysRevLett.83.3370.
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