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Volumn 69, Issue 12, 2004, Pages

D matter

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[No Author keywords available]

Indexed keywords


EID: 3843128472     PISSN: 15507998     EISSN: 15502368     Source Type: Journal    
DOI: 10.1103/PhysRevD.69.126007     Document Type: Article
Times cited : (52)

References (79)
  • 6
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    • G. Shiu and S.-H.H. Tye, Phys. Rev. D 58, 106007 (1998).
    • (1998) Phys. Rev. D , vol.58 , pp. 106007
    • Shiu, G.1
  • 14
    • 85039597059 scopus 로고    scopus 로고
    • Magnetic monopoles are common in string models and their cosmological implications have been explored 67. As we will discuss, there are similarities and differences between D matter and magnetic monopoles.
    • Magnetic monopoles are common in string models and their cosmological implications have been explored 67. As we will discuss, there are similarities and differences between D matter and magnetic monopoles.
  • 43
    • 85039603987 scopus 로고    scopus 로고
    • The disk diagram has a normalization of (Formula presented) Each open string vertex operator insertion carries a factor of (Formula presented) Hence the overall amplitude of such diagram is proportional to (Formula presented)
    • The disk diagram has a normalization of (Formula presented) Each open string vertex operator insertion carries a factor of (Formula presented) Hence the overall amplitude of such diagram is proportional to (Formula presented)
  • 47
    • 85039594558 scopus 로고    scopus 로고
    • Note however that some D-matter states could act as magnetic point sources of the world-volume gauge field on some higher-dimensional branes, in which case their properties are similar to that of ’t Hooft–Polyakov magnetic monopoles. For example, a D1 brane ending on two D3 branes corresponds to a magnetic monopole of the (Formula presented) gauge theory on the D3 brane world volume. This configuration is S dual to a fundamental string ending on the D3 branes. The power counting of (Formula presented) for D-matter interactions can be obtained by taking (Formula presented) of the S-dual amplitudes.
    • Note however that some D-matter states could act as magnetic point sources of the world-volume gauge field on some higher-dimensional branes, in which case their properties are similar to that of ’t Hooft–Polyakov magnetic monopoles. For example, a D1 brane ending on two D3 branes corresponds to a magnetic monopole of the (Formula presented) gauge theory on the D3 brane world volume. This configuration is S dual to a fundamental string ending on the D3 branes. The power counting of (Formula presented) for D-matter interactions can be obtained by taking (Formula presented) of the S-dual amplitudes.
  • 55
    • 85039598850 scopus 로고    scopus 로고
    • AGASA homepage, http://www.icrr.u-tokyo.ac.jp/as/as.html
    • AGASA homepage, http://www.icrr.u-tokyo.ac.jp/as/as.html
  • 56
    • 85039601416 scopus 로고    scopus 로고
    • HiRes homepage, http://www.cosmic-ray.org/
    • HiRes homepage, http://www.cosmic-ray.org/
  • 61
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    • For recent reviews, see S. Sarkar, hep-ph/0005256
    • Sarkar, S.1
  • 66
    • 85039590579 scopus 로고    scopus 로고
    • D-matter states could be Bosonic or Fermionic. They correspond to the Bosonic and Fermionic zero modes of the stable D branes respectively.
    • D-matter states could be Bosonic or Fermionic. They correspond to the Bosonic and Fermionic zero modes of the stable D branes respectively.
  • 67
    • 85039589590 scopus 로고    scopus 로고
    • Notice that charge conservation with respect to the unbroken gauge group on the world volume of D matter has to be satisfied if only one end point of the open strings is attached to it. In principle, the gauge symmetry on the world volume of D matter could be broken in a realistic model so this type of requirement would not impose a restriction on the possible types of excited states.
    • Notice that charge conservation with respect to the unbroken gauge group on the world volume of D matter has to be satisfied if only one end point of the open strings is attached to it. In principle, the gauge symmetry on the world volume of D matter could be broken in a realistic model so this type of requirement would not impose a restriction on the possible types of excited states.
  • 68
    • 85039600655 scopus 로고    scopus 로고
    • At a more technical level, the zeroth mode of the Virasoro generator of an excited D-particle state is (Formula presented) Requiring (Formula presented) to annihilate the D-matter state will give us the mass formula.
    • At a more technical level, the zeroth mode of the Virasoro generator of an excited D-particle state is (Formula presented) Requiring (Formula presented) to annihilate the D-matter state will give us the mass formula.
  • 69
    • 85039600574 scopus 로고    scopus 로고
    • Whether the open string states carry momentum/winding numbers depends on whether the corresponding compact dimension is along or transverse to the world volumes of D matter and the standard model (SM) branes. If a compact dimension is along the world volumes of both the D matter and the SM branes (Neumann-Neumann boundary condition), the open string states can carry momentum but not winding numbers. Conversely, if a compact dimension is transverse to both the D matter and the SM branes (Dirichlet-Dirichlet boundary condition), the open string states can carry winding but not momentum numbers. Finally, if a compact dimension is transverse to either the D matter or the SM branes but not both (Dirichlet-Neumann boundary condition), the open string states do not carry any momentum or winding numbers.
    • Whether the open string states carry momentum/winding numbers depends on whether the corresponding compact dimension is along or transverse to the world volumes of D matter and the standard model (SM) branes. If a compact dimension is along the world volumes of both the D matter and the SM branes (Neumann-Neumann boundary condition), the open string states can carry momentum but not winding numbers. Conversely, if a compact dimension is transverse to both the D matter and the SM branes (Dirichlet-Dirichlet boundary condition), the open string states can carry winding but not momentum numbers. Finally, if a compact dimension is transverse to either the D matter or the SM branes but not both (Dirichlet-Neumann boundary condition), the open string states do not carry any momentum or winding numbers.
  • 76
  • 78
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    • J. Polchinski, String Theory (Cambridge University Press, Cambridge, England, 1998).
    • J. Polchinski, String Theory (Cambridge University Press, Cambridge, England, 1998).
  • 79
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    • See, e.g., E. Witten, hep-th/0212247, and references therein.
    • Witten, E.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.