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2026

The Cosmological Constant and Dark Dimensions from Non-Supersymmetric Strings

DOI: 10.48550/arxiv.2512.20570
: Preprint

2025

A guide to frames, 2π's, scales and corrections in string compactifications

Bento, B. V., Chakraborty, D., Parameswaran, S., & Zavala, I. (2025). A guide to frames, 2π's, scales and corrections in string compactifications. INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 34(10). doi:10.1142/S0218271825300034

DOI: 10.1142/S0218271825300034
: Journal article

Cosmological tests of quintessence in quantum gravity

DOI: 10.48550/arxiv.2410.21243
: Preprint

Cosmological tests of quintessence in quantum gravity

Bhattacharya, S., Borghetto, G., Malhotra, A., Parameswaran, S., Tasinato, G., & Zavala, I. (2025). Cosmological tests of quintessence in quantum gravity. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, (4). doi:10.1088/1475-7516/2025/04/086

DOI: 10.1088/1475-7516/2025/04/086
: Journal article

2024

On (A)dS solutions from Scherk-Schwarz orbifolds

Parameswaran, S., & Serra, M. (2024). On (A)dS solutions from Scherk-Schwarz orbifolds. JOURNAL OF HIGH ENERGY PHYSICS, (10). doi:10.1007/JHEP10(2024)039

DOI: 10.1007/JHEP10(2024)039
: Journal article

Cosmological constraints on curved quintessence

Bhattacharya, S., Borghetto, G., Malhotra, A., Parameswaran, S., Tasinato, G., & Zavala, I. (2024). Cosmological constraints on curved quintessence. Journal of Cosmology and Astroparticle Physics, 2024(09), 073. doi:10.1088/1475-7516/2024/09/073

DOI: 10.1088/1475-7516/2024/09/073
: Journal article

Exponential Quintessence: curved, steep and stringy?

DOI: 10.48550/arxiv.2405.09323
: Preprint

Exponential quintessence: curved, steep and stringy?

Andriot, D., Parameswaran, S., Tsimpis, D., Wrase, T., & Zavala, I. (2024). Exponential quintessence: curved, steep and stringy?. JOURNAL OF HIGH ENERGY PHYSICS, (8). doi:10.1007/JHEP08(2024)117

DOI: 10.1007/JHEP08(2024)117
: Journal article

On (A)dS Solutions from Scherk-Schwarz Orbifolds

DOI: 10.48550/arxiv.2407.16781
: Preprint

Dark energy with the help of interacting dark sectors

Gomes, J. M., Hardy, E., & Parameswaran, S. (2024). Dark energy with the help of interacting dark sectors. PHYSICAL REVIEW D, 110(2). doi:10.1103/PhysRevD.110.023533

DOI: 10.1103/PhysRevD.110.023533
: Journal article

Cosmological constraints on curved quintessence

DOI: 10.48550/arxiv.2405.17396
: Preprint

String cosmology: From the early universe to today

Cicoli, M., Conlon, J. P., Maharana, A., Parameswaran, S., Quevedo, F., & Zavala, I. (2024). String cosmology: From the early universe to today. Physics Reports, 1059, 1-155. doi:10.1016/j.physrep.2024.01.002

DOI: 10.1016/j.physrep.2024.01.002
: Journal article

2023

Dark energy with the help of interacting dark sectors

: Preprint

De Sitter vacua — when are ‘subleading corrections’ really subleading?

Bento, B. V., Chakraborty, D., Parameswaran, S., & Zavala, I. (2023). De Sitter vacua — when are ‘subleading corrections’ really subleading?. Journal of High Energy Physics, 2023(11). doi:10.1007/jhep11(2023)075

DOI: 10.1007/jhep11(2023)075
: Journal article

De Sitter vacua -- when are `subleading corrections' really subleading?

: Preprint

String Cosmology: from the Early Universe to Today

DOI: 10.48550/arxiv.2303.04819
: Preprint

A guide to frames, $2π$'s, scales and corrections in string compactifications

: Preprint

2022

Gravity at the tip of the throat

Bento, B. V., Chakraborty, D., Parameswaran, S., & Zavala, I. (2022). Gravity at the tip of the throat. JOURNAL OF HIGH ENERGY PHYSICS, (9). doi:10.1007/JHEP09(2022)208

DOI: 10.1007/JHEP09(2022)208
: Journal article

Modular invariance, misalignment and finiteness in non-supersymmetric strings

DOI: 10.48550/arxiv.2110.11973
: Preprint

Non-supersymmetric String Models from Anti-D3-/D7-branes in Strongly Warped Throats

DOI: 10.48550/arxiv.2007.11333
: Preprint

Gravity at the Tip of the Throat

: Preprint

Modular invariance, misalignment and finiteness in non-supersymmetric strings

Cribiori, N., Parameswaran, S., Tonioni, F., & Wrase, T. (2022). Modular invariance, misalignment and finiteness in non-supersymmetric strings. JOURNAL OF HIGH ENERGY PHYSICS, (1). doi:10.1007/JHEP01(2022)127

DOI: 10.1007/JHEP01(2022)127
: Journal article

2021

A new de Sitter solution with a weakly warped deformed conifold

Bento, B. V., Chakraborty, D., Parameswaran, S., & Zavala, I. (2021). A new de Sitter solution with a weakly warped deformed conifold. JOURNAL OF HIGH ENERGY PHYSICS, (12). doi:10.1007/JHEP12(2021)124

DOI: 10.1007/JHEP12(2021)124
: Journal article

A New de Sitter Solution with a Weakly Warped Deformed Conifold

DOI: 10.48550/arxiv.2105.03370
: Preprint

Misaligned Supersymmetry and Open Strings

DOI: 10.48550/arxiv.2012.04677
: Preprint

Misaligned supersymmetry and open strings

Cribiori, N., Parameswaran, S., Tonioni, F., & Wrase, T. (2021). Misaligned supersymmetry and open strings. JOURNAL OF HIGH ENERGY PHYSICS, (4). doi:10.1007/JHEP04(2021)099

DOI: 10.1007/JHEP04(2021)099
: Journal article

2020

Non-supersymmetric string models from anti-D3-/D7-branes in strongly warped throats

Parameswaran, S., & Tonioni, F. (2020). Non-supersymmetric string models from anti-D3-/D7-branes in strongly warped throats. JOURNAL OF HIGH ENERGY PHYSICS, (12). doi:10.1007/JHEP12(2020)174

DOI: 10.1007/JHEP12(2020)174
: Journal article

Dark Energy in String Theory

Parameswaran, S., Bento, B. V., Chakraborty, D., & Zavala, I. (2020). Dark Energy in String Theory. In Proceedings of Corfu Summer Institute 2019 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2019) (pp. 123). Sissa Medialab. doi:10.22323/1.376.0123

DOI: 10.22323/1.376.0123
: Conference Paper

Dark Energy in String Theory

DOI: 10.48550/arxiv.2005.10168
: Preprint

Thermal dark energy

Hardy, E., & Parameswaran, S. (2020). Thermal dark energy. PHYSICAL REVIEW D, 101(2). doi:10.1103/PhysRevD.101.023503

DOI: 10.1103/PhysRevD.101.023503
: Journal article

2019

Squeezed tensor non-Gaussianity in non-attractor inflation

Özsoy, O., Mylova, M., Parameswaran, S., Powell, C., Tasinato, G., & Zavala, I. (2019). Squeezed tensor non-Gaussianity in non-attractor inflation. Journal of Cosmology and Astroparticle Physics, 2019(09), 036. doi:10.1088/1475-7516/2019/09/036

DOI: 10.1088/1475-7516/2019/09/036
: Journal article

Thermal Dark Energy

DOI: 10.48550/arxiv.1907.10141
: Preprint

Squeezed tensor non-Gaussianity in non-attractor inflation

DOI: 10.48550/arxiv.1902.04976
: Preprint

Dark Energy in String Theory

Bento, B. V., Chakraborty, D., Parameswaran, S. L., & Zavala, I. (2020). Dark Energy in String Theory. Retrieved from https://arxiv.org/abs/2005.10168v1

: Conference Paper

Runaway quintessence, out of the swampland

Olguín-Trejo, Y., Parameswaran, S. L., Tasinato, G., & Zavala, I. (2019). Runaway quintessence, out of the swampland. Journal of Cosmology and Astroparticle Physics, 2019(1). doi:10.1088/1475-7516/2019/01/031

DOI: 10.1088/1475-7516/2019/01/031
: Journal article

2018

A new mechanism to enhance primordial tensor fluctuations in single field inflation

Mylova, M., Ozsoy, O., Parameswaran, S., Tasinato, G., & Zavala, I. (2018). A new mechanism to enhance primordial tensor fluctuations in single field inflation. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, (12). doi:10.1088/1475-7516/2018/12/024

DOI: 10.1088/1475-7516/2018/12/024
: Journal article

Runaway Quintessence, Out of the Swampland

: Preprint

A new mechanism to enhance primordial tensor fluctuations in single field inflation

: Preprint

Mechanisms for Primordial Black Hole Production in String Theory

DOI: 10.48550/arxiv.1803.07626
: Preprint

Mechanisms for primordial black hole production in string theory

Ozsoy, O., Parameswaran, S., Tasinato, G., & Zavala, I. (2018). Mechanisms for primordial black hole production in string theory. Journal of Cosmology and Astroparticle Physics, 2018(July). doi:10.1088/1475-7516/2018/07/005

DOI: 10.1088/1475-7516/2018/07/005
: Journal article

2017

Anti-D3 branes and moduli in non-linear supergravity

Garcia del Moral, M. P., Parameswaran, S., Quiroz, N., & Zavala, I. (2017). Anti-D3 branes and moduli in non-linear supergravity. The Journal of High Energy Physics, 2017(10). doi:10.1007/JHEP10(2017)185

DOI: 10.1007/JHEP10(2017)185
: Journal article

Anti-D3 branes and moduli in non-linear supergravity

: Preprint

2016

Prospects for primordial gravitational waves in string inflation

Parameswaran, S. L., & Zavala, I. (2016). Prospects for primordial gravitational waves in string inflation. International Journal of Modern Physics D, 25(12), 1644011. doi:10.1142/s0218271816440119

DOI: 10.1142/s0218271816440119
: Journal article

Warping the Weak Gravity Conjecture

Kooner, K., Parameswaran, S., & Zavala, I. (2016). Warping the Weak Gravity Conjecture. Physics Letters B: Nuclear Physics and Particle Physics, 759, 402-409. doi:10.1016/j.physletb.2016.05.082

DOI: 10.1016/j.physletb.2016.05.082
: Journal article

Prospects for Primordial Gravitational Waves in String Inflation

: Preprint

Subleading effects and the field range in axion inflation

Parameswaran, S., Tasinato, G., & Zavala, I. (2016). Subleading effects and the field range in axion inflation. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, (4), 19 pages. doi:10.1088/1475-7516/2016/04/008

DOI: 10.1088/1475-7516/2016/04/008
: Journal article

Subleading Effects and the Field Range in Axion Inflation

: Preprint

2015

Warping the Weak Gravity Conjecture

: Preprint

Wilson lines and Chern-Simons flux in explicit heterotic Calabi-Yau compactifications

Apruzzi, F., Gautason, F. F., Parameswaran, S., & Zagermann, M. (2015). Wilson lines and Chern-Simons flux in explicit heterotic Calabi-Yau compactifications. Journal of High Energy Physics, 2015(2). doi:10.1007/jhep02(2015)183

DOI: 10.1007/jhep02(2015)183
: Journal article

Compactifications of the heterotic string and F-theory

Bizet, N. G. C., Kobayashi, T., Nilles, H. P., Pena, D. M., Parameswaran, S., Schmitz, M., . . . López, D. V. (2015). Compactifications of the heterotic string and F-theory. Anales De La Academia De Ciencias De Cuba, 5(3).

: Journal article

2014

Wilson lines and Chern-Simons flux in explicit heterotic Calabi-Yau compactifications

: Preprint

Discrete R-symmetries and Anomaly Universality in Heterotic Orbifolds

DOI: 10.48550/arxiv.1308.5669
: Preprint

Discrete R-symmetries and anomaly universality in heterotic orbifolds

Bizet, N. G. C., Kobayashi, T., Peña, D. K. M., Parameswaran, S. L., Schmitz, M., & Zavala, I. (2014). Discrete R-symmetries and anomaly universality in heterotic orbifolds. Journal of High Energy Physics, 2014(2). doi:10.1007/jhep02(2014)098

DOI: 10.1007/jhep02(2014)098
: Journal article

Worldsheet instantons and coupling selection rules in heterotic orbifolds

: Preprint

Worldsheet instantons and coupling selection rules in heterotic orbifolds

Parameswaran, S. L., & Zavala, I. (2014). Worldsheet instantons and coupling selection rules in heterotic orbifolds. In Physics of Particles and Nuclei Letters Vol. 11 (pp. 981-983). Pleiades Publishing Ltd. doi:10.1134/s154747711407036x

DOI: 10.1134/s154747711407036x
: Conference Paper

2013

R-charge conservation and more in factorizable and non-factorizable orbifolds

Bizet, N. G. C., Kobayashi, T., Peña, D. K. M., Parameswaran, S. L., Schmitz, M., & Zavala, I. (2013). R-charge conservation and more in factorizable and non-factorizable orbifolds. Journal of High Energy Physics, 2013(5). doi:10.1007/jhep05(2013)076

DOI: 10.1007/jhep05(2013)076
: Journal article

R-charge Conservation and More in Factorizable and Non-Factorizable Orbifolds

: Preprint

Accidental SUSY: enhanced bulk supersymmetry from brane back-reaction

Burgess, C. P., van Nierop, L., Parameswaran, S., Salvio, A., & Williams, M. (2013). Accidental SUSY: enhanced bulk supersymmetry from brane back-reaction. Journal of High Energy Physics, 2013(2). doi:10.1007/jhep02(2013)120

DOI: 10.1007/jhep02(2013)120
: Journal article

2012

Accidental SUSY: Enhanced Bulk Supersymmetry from Brane Back-reaction

: Preprint

Lifshitz black holes in IIA supergravity

Barclay, L., Gregory, R., Parameswaran, S., Tasinato, G., & Zavala, I. (2012). Lifshitz black holes in IIA supergravity. Journal of High Energy Physics, 2012(5). doi:10.1007/jhep05(2012)122

DOI: 10.1007/jhep05(2012)122
: Journal article

Lifshitz black holes in IIA supergravity

: Preprint

Erratum: revisiting coupling selection rules in heterotic orbifold models

Kobayashi, T., Parameswaran, S. L., Ramos-Sánchez, S., & Zavala, I. (2012). Erratum: revisiting coupling selection rules in heterotic orbifold models. Journal of High Energy Physics, 2012(12). doi:10.1007/jhep12(2012)049

DOI: 10.1007/jhep12(2012)049
: Journal article

Revisiting coupling selection rules in heterotic orbifold models

Kobayashi, T., Parameswaran, S. L., Ramos-Sánchez, S., & Zavala, I. (2012). Revisiting coupling selection rules in heterotic orbifold models. Journal of High Energy Physics, 2012(5). doi:10.1007/jhep05(2012)008

DOI: 10.1007/jhep05(2012)008
: Journal article

2011

Revisiting Coupling Selection Rules in Heterotic Orbifold Models

: Preprint

Coupling brane fields to bulk supergravity

Parameswaran, S. L., & Schmidt, J. (2011). Coupling brane fields to bulk supergravity. Physics Letters B, 696(1-2), 131-137. doi:10.1016/j.physletb.2010.11.069

DOI: 10.1016/j.physletb.2010.11.069
: Journal article

On moduli stabilisation and de Sitter vacua in MSSM heterotic orbifolds

Parameswaran, S. L., Ramos-Sánchez, S., & Zavala, I. (2011). On moduli stabilisation and de Sitter vacua in MSSM heterotic orbifolds. Journal of High Energy Physics, 2011(1). doi:10.1007/jhep01(2011)071

DOI: 10.1007/jhep01(2011)071
: Journal article

2010

On Moduli Stabilisation and de Sitter Vacua in MSSM Heterotic Orbifolds

: Preprint

Lifshitz solutions in supergravity and string theory

: Preprint

Coupling Brane Fields to Bulk Supergravity

: Preprint

Aspects of Brane Physics in 5 and 6 Dimensions

: Preprint

Lifshitz solutions in supergravity and string theory

Gregory, R., Parameswaran, S. L., Tasinato, G., & Zavala, I. (2010). Lifshitz solutions in supergravity and string theory. Journal of High Energy Physics, 2010(12). doi:10.1007/jhep12(2010)047

DOI: 10.1007/jhep12(2010)047
: Journal article

2009

General perturbations for braneworld compactifications and the six dimensional case

Parameswaran, S. L., Randjbar-Daemi, S., & Salvio, A. (2009). General perturbations for braneworld compactifications and the six dimensional case. Journal of High Energy Physics, 2009(03), 136. doi:10.1088/1126-6708/2009/03/136

DOI: 10.1088/1126-6708/2009/03/136
: Journal article

The fate of unstable gauge flux compactifications

Burgess, C. P., Parameswaran, S. L., & Zavala, I. (2009). The fate of unstable gauge flux compactifications. Journal of High Energy Physics, 2009(05), 008. doi:10.1088/1126-6708/2009/05/008

DOI: 10.1088/1126-6708/2009/05/008
: Journal article

General Perturbations for Braneworld Compactifications and the Six Dimensional Case

: Preprint

2008

The Fate of Unstable Gauge Flux Compactifications

: Preprint

Stability and negative tensions in 6D brane worlds

Parameswaran, S. L., Randjbar-Daemi, S., & Salvio, A. (2008). Stability and negative tensions in 6D brane worlds. Journal of High Energy Physics, 2008(01), 051. doi:10.1088/1126-6708/2008/01/051

DOI: 10.1088/1126-6708/2008/01/051
: Journal article

2007

Stability and Negative Tensions in 6D Brane Worlds

: Preprint

Consistent de Sitter string vacua from Kähler stabilization and D‐term uplifting

Parameswaran, S. L., & Westphal, A. (2007). Consistent de Sitter string vacua from Kähler stabilization and D‐term uplifting. Fortschritte der Physik, 55(5-7), 804-810. doi:10.1002/prop.200610374

DOI: 10.1002/prop.200610374
: Journal article

Gauge fields, fermions and mass gaps in 6D brane worlds

Parameswaran, S. L., Randjbar-Daemi, S., & Salvio, A. (2007). Gauge fields, fermions and mass gaps in 6D brane worlds. Nuclear Physics B, 767(1-2), 54-81. doi:10.1016/j.nuclphysb.2006.12.020

DOI: 10.1016/j.nuclphysb.2006.12.020
: Journal article

Consistent de Sitter String Vacua from Kahler Stabilization and D-term uplifting

: Preprint

2006

De Sitter string vacua from perturbative Kähler corrections and consistent D-terms

Parameswaran, S. L., & Westphal, A. (2006). De Sitter string vacua from perturbative Kähler corrections and consistent D-terms. Journal of High Energy Physics, 2006(10), 079. doi:10.1088/1126-6708/2006/10/079

DOI: 10.1088/1126-6708/2006/10/079
: Journal article

Gauge Fields, Fermions and Mass Gaps in 6D Brane Worlds

: Preprint

The 6D superswirl

Parameswaran, S. L., Tasinato, G., & Zavala, I. (2006). The 6D superswirl. Nuclear Physics B, 737(1-2), 49-72. doi:10.1016/j.nuclphysb.2005.12.020

DOI: 10.1016/j.nuclphysb.2005.12.020
: Journal article

de Sitter String Vacua from Perturbative Kahler Corrections and Consistent D-terms

: Preprint

2005

The 6D SuperSwirl

: Preprint

2004

Towards a naturally small cosmological constant from branes in 6D supergravity

Aghababaie, Y., Burgess, C. P., Parameswaran, S. L., & Quevedo, F. (2004). Towards a naturally small cosmological constant from branes in 6D supergravity. Nuclear Physics B, 680(1-3), 389-414. doi:10.1016/j.nuclphysb.2003.12.015

DOI: 10.1016/j.nuclphysb.2003.12.015
: Journal article

2003

Warped brane worlds in six dimensional supergravity

Aghababaie, Y., Burgess, C. P., Cline, J. M., Firouzjahi, H., Parameswaran, S. L., Quevedo, F., . . . C., I. Z. (2003). Warped brane worlds in six dimensional supergravity. Journal of High Energy Physics, 2003(09), 037. doi:10.1088/1126-6708/2003/09/037

DOI: 10.1088/1126-6708/2003/09/037
: Journal article

Warped Brane Worlds in Six Dimensional Supergravity

: Preprint

Towards a Naturally Small Cosmological Constant from Branes in 6D Supergravity

: Preprint

SUSY breaking and moduli stabilization from fluxes in gauged 6<i>D</i>supergravity

Aghababaie, Y., Burgess, C. P., Parameswaran, S. L., & Quevedo, F. (2003). SUSY breaking and moduli stabilization from fluxes in gauged 6<i>D</i>supergravity. Journal of High Energy Physics, 2003(03), 032. doi:10.1088/1126-6708/2003/03/032

DOI: 10.1088/1126-6708/2003/03/032
: Journal article

2002

SUSY Breaking and Moduli Stabilization from Fluxes in Gauged 6D Supergravity

: Preprint