Holomorphic Blocks in Quantum Field Theory: New Constructions of Exact Results

Informacje na temat projektu

HBQFTNCER

Identyfikator umowy o grant: 637844

DOI

10.3030/637844

Projekt został zamknięty

Data podpisania przez KE 13 Marca 2015

Data rozpoczęcia 1 Września 2015

Data zakończenia 28 Lutego 2021

Finansowanie w ramach

• EXCELLENT SCIENCE - European Research Council (ERC)

Koszt całkowity

€ 1 287 088,00

Wkład UE

€ 1 287 088,00

Koordynowany przez

UNIVERSITA' DEGLI STUDI DI MILANO-BICOCCA
Italy

CORDIS oferuje możliwość skorzystania z odnośników do publicznie dostępnych publikacji i rezultatów projektów realizowanych w ramach programów ramowych HORYZONT.

Odnośniki do rezultatów i publikacji związanych z poszczególnymi projektami 7PR, a także odnośniki do niektórych konkretnych kategorii wyników, takich jak zbiory danych i oprogramowanie, są dynamicznie pobierane z systemu OpenAIRE .

Publikacje

Peer reviewed articles (66)

Rank $Q$ E-string on a torus with flux

Autorzy: Sara Pasquetti, Shlomo Razamat, Matteo Sacchi, Gabi Zafrir
Opublikowane w: SciPost Physics, Numer 8/1, 2020, ISSN 2542-4653
Wydawca: SciPost
DOI: 10.21468/scipostphys.8.1.014

An $$ \mathcal{N} $$ = 1 Lagrangian for the rank 1 E6 superconformal theory

Autorzy: Gabi Zafrir
Opublikowane w: Journal of High Energy Physics, Numer 2020/12, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep12(2020)098

Holography, Matrix Factorizations and K-stability

Autorzy: Marco Fazzi; Marco Fazzi; Alessandro Tomasiello
Opublikowane w: Journal of High Energy Physics, Vol 2020, Iss 5, Pp 1-48 (2020), Numer 8, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep05(2020)119

Marginal operators and supersymmetry enhancement in 3d S-fold SCFTs

Autorzy: Emanuele Beratto, Noppadol Mekareeya, Matteo Sacchi
Opublikowane w: Journal of High Energy Physics, Numer 2020/12, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep12(2020)017

3d field theory, plane partitions and triple Macdonald polynomials

Autorzy: Yegor Zenkevich
Opublikowane w: Journal of High Energy Physics, Numer 2019/6, 2019, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep06(2019)012

Dyonic black hole degeneracies in $$ \mathcal{N} $$ = 4 string theory from Dabholkar-Harvey degeneracies

Autorzy: Abhishek Chowdhury, Abhiram Kidambi, Sameer Murthy, Valentin Reys, Timm Wrase
Opublikowane w: Journal of High Energy Physics, Numer 2020/10, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep10(2020)184

Gluing gravitational blocks for AdS black holes

Autorzy: Seyed Morteza Hosseini, Kiril Hristov, Alberto Zaffaroni
Opublikowane w: Journal of High Energy Physics, Numer 2019/12, 2019, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep12(2019)168

Generalized Euler index, holonomy saddles, and wall-crossing

Autorzy: Dongwook Ghim, Chiung Hwang, Piljin Yi
Opublikowane w: Journal of High Energy Physics, Numer 2020/3, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep03(2020)107

3d mirrors of the circle reduction of twisted A2N theories of class S

Autorzy: Emanuele Beratto, Simone Giacomelli, Noppadol Mekareeya, Matteo Sacchi
Opublikowane w: Journal of High Energy Physics, Numer 2020/9, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep09(2020)161

Entropy functions of BPS black holes in AdS$_4$ and AdS$_6$

Autorzy: S. H. Choi; June Nahmgoong; Chiung Hwang; Chiung Hwang; Seok Kim
Opublikowane w: Journal of the Korean Physical Society, Numer 7, 2020, ISSN 1976-8524
Wydawca: Springer
DOI: 10.3938/jkps.76.101

From 3d dualities to 2d free field correlators and back

Autorzy: Sara Pasquetti, Matteo Sacchi
Opublikowane w: Journal of High Energy Physics, Numer 2019/11, 2019, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep11(2019)081

Magnetic quivers for rank 1 theories

Autorzy: Antoine Bourget, Julius F. Grimminger, Amihay Hanany, Marcus Sperling, Gabi Zafrir, Zhenghao Zhong
Opublikowane w: Journal of High Energy Physics, Numer 2020/9, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep09(2020)189

Universal 3d Cardy block and black hole entropy

Autorzy: Sunjin Choi, Chiung Hwang
Opublikowane w: Journal of High Energy Physics, Numer 2020/3, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep03(2020)068

Duality walls in the 4d $$ \mathcal{N} $$ = 2 SU(N) gauge theory with 2N flavours

Autorzy: Ivan Garozzo, Noppadol Mekareeya, Matteo Sacchi
Opublikowane w: Journal of High Energy Physics, Numer 2019/11, 2019, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep11(2019)053

New aspects of Argyres-Douglas theories and their dimensional reduction

Autorzy: Simone Giacomelli, Noppadol Mekareeya, Matteo Sacchi
Opublikowane w: Journal of High Energy Physics, Numer 2021/3, 2021, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep03(2021)242

Large p explorations. From SUGRA to big STRINGS in Mellin space

Autorzy: Francesco Aprile, Pedro Vieira
Opublikowane w: Journal of High Energy Physics, Numer 2020/12, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep12(2020)206

T-branes, anomalies and moduli spaces in 6D SCFTs

Autorzy: Noppadol Mekareeya, Tom Rudelius, Alessandro Tomasiello
Opublikowane w: Journal of High Energy Physics, Numer 2017/10, 2017, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep10(2017)158

One-loop determinants for black holes in 4d gauged supergravity

Autorzy: Ivano Lodato; Valentin Reys; Kiril Hristov
Opublikowane w: Journal of High Energy Physics, Vol 2019, Iss 11, Pp 1-45 (2019), Numer 5, 2019, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep11(2019)105

On AdS$_3$ solutions of Type IIB

Autorzy: Achilleas Passias; Daniël Prins
Opublikowane w: "JHEP, 2020, 05, pp.048. ⟨10.1007/JHEP05(2020)048⟩", Numer 5, 2021, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep05(2020)048

3d dualities from 2d free field correlators: recombination and rank stabilization

Autorzy: Sara Pasquetti, Matteo Sacchi
Opublikowane w: Journal of High Energy Physics, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep01(2020)061

New 2d $$ \mathcal{N} $$ = (0, 2) dualities from four dimensions

Autorzy: Matteo Sacchi
Opublikowane w: Journal of High Energy Physics, Numer 2020/12, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep12(2020)009

On the quantum entropy function in 4d gauged supergravity

Autorzy: Kiril Hristov; Ivano Lodato; Valentin Reys
Opublikowane w: Journal of High Energy Physics, Vol 2018, Iss 7, Pp 1-45 (2018), Numer 3, 2018, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep07(2018)072

Charges and holography in 6d (1,0) theories

Autorzy: Oren Bergman, Marco Fazzi, Diego Rodríguez-Gómez, Alessandro Tomasiello
Opublikowane w: Journal of High Energy Physics, Numer 2020/5, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep05(2020)138

One-loop amplitudes in AdS5×S5 supergravity from $$ \mathcal{N} $$ = 4 SYM at strong coupling

Autorzy: F. Aprile, J.M. Drummond, P. Heslop, H. Paul
Opublikowane w: Journal of High Energy Physics, Numer 2020/3, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep03(2020)190

Superconformal indices at large N and the entropy of AdS 5 × SE 5 black holes

Autorzy: Francesco Benini, Edoardo Colombo, Saman Soltani, Alberto Zaffaroni, Ziruo Zhang
Opublikowane w: Classical and Quantum Gravity, Numer 37/21, 2020, Strona(/y) 215021, ISSN 0264-9381
Wydawca: Institute of Physics Publishing
DOI: 10.1088/1361-6382/abb39b

4d mirror-like dualities

Autorzy: Chiung Hwang, Sara Pasquetti, Matteo Sacchi
Opublikowane w: Journal of High Energy Physics, Numer 2020/9, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep09(2020)047

Mixed Rademacher and BPS black holes

Autorzy: Francesca Ferrari, Valentin Reys
Opublikowane w: Journal of High Energy Physics, Numer 2017/7, 2017, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/JHEP07(2017)094

Holomorphic blocks and the 5d AGT correspondence

Autorzy: Sara Pasquetti
Opublikowane w: Journal of Physics A: Mathematical and Theoretical, Numer 50/44, 2017, Strona(/y) 443016, ISSN 1751-8113
Wydawca: Institute of Physics Publishing
DOI: 10.1088/1751-8121/aa60fe

Generalized Knizhnik-Zamolodchikov equation for Ding-Iohara-Miki algebra

Autorzy: Hidetoshi Awata, Hiroaki Kanno, Andrei Mironov, Alexei Morozov, Andrey Morozov, Yusuke Ohkubo, Yegor Zenkevich
Opublikowane w: Physical Review D, Numer 96/2, 2017, ISSN 2470-0010
Wydawca: APS
DOI: 10.1103/PhysRevD.96.026021

On three-dimensional quiver gauge theories of type B

Autorzy: Anindya Dey, Amihay Hanany, Peter Koroteev, Noppadol Mekareeya
Opublikowane w: Journal of High Energy Physics, Numer 2017/9, 2017, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/JHEP09(2017)067

Refined toric branes, surface operators and factorization of generalized Macdonald polynomials

Autorzy: Yegor Zenkevich
Opublikowane w: Journal of High Energy Physics, Numer 2017/9, 2017, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/JHEP09(2017)070

E 8 instantons on type-A ALE spaces and supersymmetric field theories

Autorzy: Noppadol Mekareeya, Kantaro Ohmori, Yuji Tachikawa, Gabi Zafrir
Opublikowane w: Journal of High Energy Physics, Numer 2017/9, 2017, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/JHEP09(2017)144

Anomaly in RTT relation for DIM algebra and network matrix models

Autorzy: Hidetoshi Awata, Hiroaki Kanno, Andrei Mironov, Alexei Morozov, Andrey Morozov, Yusuke Ohkubo, Yegor Zenkevich
Opublikowane w: Nuclear Physics B, Numer 918, 2017, Strona(/y) 358-385, ISSN 0550-3213
Wydawca: Elsevier BV
DOI: 10.1016/j.nuclphysb.2017.03.003

A-twisted correlators and Hori dualities

Autorzy: Cyril Closset, Noppadol Mekareeya, Daniel S. Park
Opublikowane w: Journal of High Energy Physics, Numer 2017/8, 2017, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/JHEP08(2017)101

AdS5 compactifications with punctures in massive IIA supergravity

Autorzy: Ibrahima Bah, Achilleas Passias, Alessandro Tomasiello
Opublikowane w: Journal of High Energy Physics, Numer 2017/11, 2017, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/JHEP11(2017)050

Small instanton transitions for M5 fractions

Autorzy: Noppadol Mekareeya, Kantaro Ohmori, Hiroyuki Shimizu, Alessandro Tomasiello
Opublikowane w: Journal of High Energy Physics, Numer 2017/10, 2017, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/JHEP10(2017)055

An extremization principle for the entropy of rotating BPS black holes in AdS5

Autorzy: Seyed Morteza Hosseini, Kiril Hristov, Alberto Zaffaroni
Opublikowane w: Journal of High Energy Physics, Numer 2017/7, 2017, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/JHEP07(2017)106

3d N $$ \mathcal{N} $$ = 2 mirror symmetry, pq-webs and monopole superpotentials

Autorzy: Sergio Benvenuti, Sara Pasquetti
Opublikowane w: Journal of High Energy Physics, Numer 2016/8, 2016, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/JHEP08(2016)136

Euclidean supergravity

Autorzy: Bernard de Wit, Valentin Reys
Opublikowane w: Journal of High Energy Physics, Numer 2017/12, 2017, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/JHEP12(2017)011

A universal counting of black hole microstates in AdS4

Autorzy: Francesco Azzurli, Nikolay Bobev, P. Marcos Crichigno, Vincent S. Min, Alberto Zaffaroni
Opublikowane w: Journal of High Energy Physics, Numer 2018/2, 2018, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/JHEP02(2018)054

T[SU(N)] duality webs: mirror symmetry, spectral duality and gauge/CFT correspondences

Autorzy: Anton Nedelin, Sara Pasquetti, Yegor Zenkevich
Opublikowane w: Journal of High Energy Physics, Numer 2019/2, 2019, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep02(2019)176

Flipping the head of T [SU(N)]: mirror symmetry, spectral duality and monopoles

Autorzy: Francesco Aprile, Sara Pasquetti, Yegor Zenkevich
Opublikowane w: Journal of High Energy Physics, Numer 2019/4, 2019, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep04(2019)138

BRST quantization and equivariant cohomology: localization with asymptotic boundaries

Autorzy: Bernard de Wit, Sameer Murthy, Valentin Reys
Opublikowane w: Journal of High Energy Physics, Numer 2018/9, 2018, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/JHEP09(2018)084

Supersymmeric Gauge Theory on Curved 7‐Branes

Autorzy: Daniël Prins
Opublikowane w: Fortschritte der Physik, Numer 67/5, 2019, Strona(/y) 1900009, ISSN 0015-8208
Wydawca: John Wiley & Sons Ltd.
DOI: 10.1002/prop.201900009

Double-trace spectrum of N = 4 supersymmetric Yang-Mills theory at strong coupling

Autorzy: Francesco Aprile, James Drummond, Paul Heslop, Hynek Paul
Opublikowane w: Physical Review D, Numer 98/12, 2018, ISSN 2470-0010
Wydawca: American Physical Society
DOI: 10.1103/physrevd.98.126008

Loop corrections for Kaluza-Klein AdS amplitudes

Autorzy: F. Aprile, J. M. Drummond, P. Heslop, H. Paul
Opublikowane w: Journal of High Energy Physics, Numer 2018/5, 2018, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep05(2018)056

Living on the walls of super-QCD

Autorzy: Vladimir Bashmakov, Francesco Benini, Sergio Benvenuti, Matteo Bertolini
Opublikowane w: SciPost Physics, Numer 6/4, 2019, ISSN 2542-4653
Wydawca: SciPost Foundation
DOI: 10.21468/scipostphys.6.4.044

The MacMahon R-matrix

Autorzy: Hidetoshi Awata, Hiroaki Kanno, Andrei Mironov, Alexei Morozov, Kazuma Suetake, Yegor Zenkevich
Opublikowane w: Journal of High Energy Physics, Numer 2019/4, 2019, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep04(2019)097

6D attractors and black hole microstates

Autorzy: Seyed Morteza Hosseini, Kiril Hristov, Achilleas Passias, Alberto Zaffaroni
Opublikowane w: Journal of High Energy Physics, Numer 2018/12, 2018, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep12(2018)001

Proving the equivalence of c-extremization and its gravitational dual for all toric quivers

Autorzy: Seyed Morteza Hosseini, Alberto Zaffaroni
Opublikowane w: Journal of High Energy Physics, Numer 2019/3, 2019, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep03(2019)108

Topologically twisted indices in five dimensions and holography

Autorzy: Seyed Morteza Hosseini, Itamar Yaakov, Alberto Zaffaroni
Opublikowane w: Journal of High Energy Physics, Numer 2018/11, 2018, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep11(2018)119

Holographic duals of 3d S-fold CFTs

Autorzy: Benjamin Assel, Alessandro Tomasiello
Opublikowane w: Journal of High Energy Physics, Numer 2018/6, 2018, Strona(/y) https://link.springer.com/article/10.1007%2FJHEP06%282018%29019, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep06(2018)019

SUSY monopole potentials in 2+1 dimensions

Autorzy: Francesco Benini, Sergio Benvenuti, Sara Pasquetti
Opublikowane w: Journal of High Energy Physics, Numer 2017/8, 2017, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/JHEP08(2017)086

Supersymmetric indices of 3d S-fold SCFTs

Autorzy: Ivan Garozzo, Gabriele Lo Monaco, Noppadol Mekareeya, Matteo Sacchi
Opublikowane w: Journal of High Energy Physics, Numer 2019/8, 2019, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep08(2019)008

$$ \mathcal{N} $$ = 1 conformal duals of gauged En MN models

Autorzy: Shlomo S. Razamat, Gabi Zafrir
Opublikowane w: Journal of High Energy Physics, Numer 2020/6, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep06(2020)176

Classification of 5d N=1 gauge theories

Autorzy: Bhardwaj, Lakshya; Zafrir, Gabi
Opublikowane w: Journal of Higher Energy Physics, Numer 10, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep12(2020)099

More on $$ \mathcal{N} $$ =2 S-folds

Autorzy: Simone Giacomelli, Mario Martone, Yuji Tachikawa, Gabi Zafrir
Opublikowane w: Journal of High Energy Physics, Numer 2021/1, 2021, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep01(2021)054

Generalized symmetries and holography in ABJM-type theories

Autorzy: Oren Bergman, Yuji Tachikawa, Gabi Zafrir
Opublikowane w: Journal of High Energy Physics, Numer 2020/7, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep07(2020)077

Anomalies, black strings and the charged Cardy formula

Autorzy: Seyed Morteza Hosseini, Kiril Hristov, Yuji Tachikawa, Alberto Zaffaroni
Opublikowane w: Journal of High Energy Physics, Numer 2020/9, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep09(2020)167

Symmetry enhancement and duality walls in 5d gauge theories

Autorzy: Ivan Garozzo, Noppadol Mekareeya, Matteo Sacchi, Gabi Zafrir
Opublikowane w: Journal of High Energy Physics, Numer 2020/6, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep06(2020)159

Microstates of rotating AdS5 strings

Autorzy: Seyed Morteza Hosseini, Kiril Hristov, Alberto Zaffaroni
Opublikowane w: Journal of High Energy Physics, Numer 2019/11, 2019, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep11(2019)090

Geometry of I$$ \mathcal{I} $$ -extremization and black holes microstates

Autorzy: Hosseini, Seyed Morteza; Zaffaroni, Alberto
Opublikowane w: Journal of High Energy Physics, Numer 5, 2019, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep07(2019)174

Single particle operators and their correlators in free $$ \mathcal{N} $$ = 4 SYM

Autorzy: F. Aprile, J. M. Drummond, P. Heslop, H. Paul, F. Sanfilippo, M. Santagata, A. Stewart
Opublikowane w: Journal of High Energy Physics, Numer 2020/11, 2020, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep11(2020)072

(q, t)-KZ equations for quantum toroidal algebra and Nekrasov partition functions on ALE spaces

Autorzy: Hidetoshi Awata, Hiroaki Kanno, Andrei Mironov, Alexei Morozov, Kazuma Suetake, Yegor Zenkevich
Opublikowane w: Journal of High Energy Physics, Numer 2018/3, 2018, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep03(2018)192

A note on the entropy of rotating BPS AdS$_7\times S^4$ black holes

Autorzy: Hosseini, Seyed Morteza; Hristov, Kiril; Zaffaroni, Alberto
Opublikowane w: Journal of Higher Energy Physics, Numer 7, 2018, ISSN 1029-8479
Wydawca: Institute of Physics Publishing
DOI: 10.1007/jhep05(2018)121

AdS black holes, holography and localization

Autorzy: Alberto Zaffaroni
Opublikowane w: Living Reviews in Relativity, Numer 5, 2020, ISSN 1433-8351
Wydawca: Albert Einstein Institut
DOI: 10.1007/s41114-020-00027-8