Non-Supersymmetric AdS from String Theory

Baykara, Zihni Kaan; Robbins, Daniel W.; Sethi, Savdeep

doi:10.48550/arxiv.2212.02557

Cited by 5 publications

(7 citation statements)

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“…The above result has been generalised to various settings in [72,73,74,75,76]. In particular, [75] obtained a no-go theorem for dS solutions (of any dimensionality) to all orders in the α expansion in heterotic strings (recently this was generalised to one loop in a specific setting involving string theory without spacetime supersymmetry [77]). Implications for other string theories follow from dualities.…”

Section: II Iiimentioning

confidence: 85%

“…If correct, there will be important implication not only for moduli stabilisation (the AdS vacuum in the LVS scenario is non-supersymmetric) but also for applications of the AdS/CFT correspondence to condensed matter physics, quantum information and hadron physics since the holographic models used in this context have no supersymmetry. At present, the stronger form of the conjecture does not have much support (see [77] for good evidence in favour of non-supersymmetric AdS vacua in O(16) × O( 16) heterotic strings). The conjecture can be reformulated in the language of conformal field theories.…”

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confidence: 90%

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String Cosmology: from the Early Universe to Today

Cicoli¹,

Conlon²,

Maharana³

et al. 2023

Preprint

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We review applications of string theory to cosmology, from primordial times to the present-day accelerated expansion. Starting with a brief overview of cosmology and string compactifications, we discuss in detail moduli stabilisation, inflation in string theory, the impact of string theory on post-inflationary dynamics (reheating, moduli domination, kination), dark energy (the cosmological constant from a string landscape and models of quintessence) and various alternative scenarios (string/brane gases, the pre big-bang scenario, rolling tachyons, ekpyrotic/cyclic cosmologies, bubbles of nothing, S-brane and holographic cosmologies). The state of the art in string constructions is described in each topic and, where relevant, connections to swampland conjectures are made. The possibilities for novel particles and excitations (axions, moduli, cosmic strings, branes, solitons, oscillons and boson stars) are emphasised. Implications for the physics of the CMB, gravitational waves, dark matter and dark radiation are discussed along with potential observational signatures.

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Section: II Iiimentioning

confidence: 85%

mentioning

confidence: 90%

String Cosmology: from the Early Universe to Today

Cicoli¹,

Conlon²,

Maharana³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…In the latter case, the condition (3.20) yields q = −2wG, and then we find 2wGw t = 1 and 9 We here use "neutral scalar" to mean that the scalar is a singlet of the non-Abelian enhanced group. The scalar can be charged under non-enhanced U (1)'s.…”

Section: Scalar Conjugacy Classmentioning

confidence: 86%

“…in refs. [6][7][8][9][10]), although it was also proposed that phenomenologically viable models can be obtained by starting from ten-dimensional tachyonic string vacua [11][12][13][14][15][16]. By the construction, the 10D non-supersymmetric theories are discretely related to the 10D supersymmetric ones.…”

Section: Introductionmentioning

confidence: 99%

New non-supersymmetric heterotic string theory with reduced rank and exponential suppression of the cosmological constant

Nakajima¹

2023

Preprint

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We study the heterotic asymmetric orbifold model in which supersymmetry is broken by the stringy Schark-Schwarz mechanism. This model is a natural non-supersymmetric extension of CHL strings and can also be interpreted as the interpolating model between the E 8 × E ′ 8 theory and the non-supersymmetric E 8 theory. The enhancement of gauge groups, of which the rank is reduced to 8 + d, is explored. In particular, the enhancement to non-simply-laced groups is possible with d ≥ 2, as well as in the CHL model. We also give the conditions that the massless matter spectrum must satisfy. Moreover, the one-loop cosmological constant is evaluated in the regime where supersymmetry is asymptotically restored, and we show that the exponential suppression can occur unless d = 1.

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“…Determining the structure of this landscape as well as their potential upliftability to dS is a further task for future work. See also [92][93][94] for non-SUSY heterotic AdS vacua.…”

Section: Jhep02(2023)209mentioning

confidence: 99%

Heterotic de Sitter beyond modular symmetry

Leedom

Righi

Westphal

2023

J. High Energ. Phys.

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We study the vacua of 4d heterotic toroidal orbifolds using effective theories consisting of an overall Kähler modulus, the dilaton, and non-perturbative corrections to both the superpotential and Kähler potential that respect modular invariance. We prove three de Sitter no-go theorems for several classes of vacua and thereby substantiate and extend previous conjectures. Additionally, we provide evidence that extrema of the scalar potential can occur inside the PSL(2, ℤ) fundamental domain of the Kähler modulus, in contradiction of a separate conjecture. We also illustrate a loophole in the no-go theorems and determine criteria that allow for metastable de Sitter vacua. Finally, we identify inherently stringy non-perturbative effects in the dilaton sector that could exploit this loophole and potentially realize de Sitter vacua.

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Non-Supersymmetric AdS from String Theory

Cited by 5 publications

References 0 publications

String Cosmology: from the Early Universe to Today

String Cosmology: from the Early Universe to Today

New non-supersymmetric heterotic string theory with reduced rank and exponential suppression of the cosmological constant

Heterotic de Sitter beyond modular symmetry

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