Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2047588386', 'doi': 'https://doi.org/10.1103/physrevd.64.083509', 'title': 'Effective cosmological constant and quintessence', 'display_name': 'Effective cosmological constant and quintessence', 'publication_year': 2001, 'publication_date': '2001-09-25', 'ids': {'openalex': 'https://openalex.org/W2047588386', 'doi': 'https://doi.org/10.1103/physrevd.64.083509', 'mag': '2047588386'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1103/physrevd.64.083509', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4210190737', 'display_name': 'Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields', 'issn_l': '0556-2821', 'issn': ['0556-2821', '1089-4918', '1538-4500'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320261', 'host_organization_name': 'American Physical Society', 'host_organization_lineage': ['https://openalex.org/P4310320261'], 'host_organization_lineage_names': ['American Physical Society'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'datacite'], 'open_access': {'is_oa': True, 'oa_status': 'green', 'oa_url': 'https://arxiv.org/pdf/astro-ph/0007128', 'any_repository_has_fulltext': True}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5067163883', 'display_name': 'R. de Ritis', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210108560', 'display_name': 'INFN Sezione di Napoli', 'ror': 'https://ror.org/015kcdd40', 'country_code': 'IT', 'type': 'facility', 'lineage': ['https://openalex.org/I160013858', 'https://openalex.org/I4210108560', 'https://openalex.org/I71267560']}], 'countries': ['IT'], 'is_corresponding': False, 'raw_author_name': 'Ruggiero de Ritis', 'raw_affiliation_strings': ['Dipartimento di Scienze Fisiche, Università di Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, Ed. N, I-80126 Napoli, Italy', "Istituto Nazionale di Fisica Nucleare, Sez. Napoli, Complesso Universitario di Monte Sant'Angelo, Via Cintia, Ed. G, I-80126 Napoli, Italy"], 'affiliations': [{'raw_affiliation_string': 'Dipartimento di Scienze Fisiche, Università di Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, Ed. N, I-80126 Napoli, Italy', 'institution_ids': ['https://openalex.org/I4210108560']}, {'raw_affiliation_string': "Istituto Nazionale di Fisica Nucleare, Sez. Napoli, Complesso Universitario di Monte Sant'Angelo, Via Cintia, Ed. G, I-80126 Napoli, Italy", 'institution_ids': ['https://openalex.org/I4210108560']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5007794876', 'display_name': 'A. A. Marino', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210108560', 'display_name': 'INFN Sezione di Napoli', 'ror': 'https://ror.org/015kcdd40', 'country_code': 'IT', 'type': 'facility', 'lineage': ['https://openalex.org/I160013858', 'https://openalex.org/I4210108560', 'https://openalex.org/I71267560']}, {'id': 'https://openalex.org/I2801954024', 'display_name': 'Astronomical Observatory of Capodimonte', 'ror': 'https://ror.org/02fwden70', 'country_code': 'IT', 'type': 'facility', 'lineage': ['https://openalex.org/I2801954024', 'https://openalex.org/I875825670']}], 'countries': ['IT'], 'is_corresponding': False, 'raw_author_name': 'Alma A. Marino', 'raw_affiliation_strings': ["Istituto Nazionale di Fisica Nucleare, Sez. Napoli, Complesso Universitario di Monte Sant'Angelo, Via Cintia, Ed. G, I-80126 Napoli, Italy", 'Osservatorio Astronomico di Capodimonte, Via Moiariello 16, I-80131 Napoli, Italy'], 'affiliations': [{'raw_affiliation_string': "Istituto Nazionale di Fisica Nucleare, Sez. Napoli, Complesso Universitario di Monte Sant'Angelo, Via Cintia, Ed. G, I-80126 Napoli, Italy", 'institution_ids': ['https://openalex.org/I4210108560']}, {'raw_affiliation_string': 'Osservatorio Astronomico di Capodimonte, Via Moiariello 16, I-80131 Napoli, Italy', 'institution_ids': ['https://openalex.org/I2801954024']}]}], 'countries_distinct_count': 1, 'institutions_distinct_count': 2, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 0.81, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 16, 'citation_normalized_percentile': {'value': 0.736596, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 83, 'max': 84}, 'biblio': {'volume': '64', 'issue': '8', 'first_page': None, 'last_page': None}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10095', 'display_name': 'Cosmological Parameters and Dark Energy', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/3103', 'display_name': 'Astronomy and Astrophysics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T10095', 'display_name': 'Cosmological Parameters and Dark Energy', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/3103', 'display_name': 'Astronomy and Astrophysics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10025', 'display_name': 'Holographic Derivation of Field Theories and Gravity', 'score': 0.9999, 'subfield': {'id': 'https://openalex.org/subfields/3106', 'display_name': 'Nuclear and High Energy Physics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10048', 'display_name': 'Particle Physics and High-Energy Collider Experiments', 'score': 0.9981, 'subfield': {'id': 'https://openalex.org/subfields/3106', 'display_name': 'Nuclear and High Energy Physics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/quintessence', 'display_name': 'Quintessence', 'score': 0.9616393}, {'id': 'https://openalex.org/keywords/cosmological-constant', 'display_name': 'Cosmological constant', 'score': 0.7096224}, {'id': 'https://openalex.org/keywords/conformal-symmetry', 'display_name': 'Conformal Symmetry', 'score': 0.504865}, {'id': 'https://openalex.org/keywords/cosmological-parameters', 'display_name': 'Cosmological Parameters', 'score': 0.501674}, {'id': 'https://openalex.org/keywords/constant', 'display_name': 'Constant (computer programming)', 'score': 0.48278773}, {'id': 'https://openalex.org/keywords/friedmann–lemaître–robertson–walker-metric', 'display_name': 'Friedmann–Lemaître–Robertson–Walker metric', 'score': 0.4577765}], 'concepts': [{'id': 'https://openalex.org/C36429004', 'wikidata': 'https://www.wikidata.org/wiki/Q1777391', 'display_name': 'Quintessence', 'level': 4, 'score': 0.9616393}, {'id': 'https://openalex.org/C80892491', 'wikidata': 'https://www.wikidata.org/wiki/Q578555', 'display_name': "Noether's theorem", 'level': 3, 'score': 0.8004406}, {'id': 'https://openalex.org/C121332964', 'wikidata': 'https://www.wikidata.org/wiki/Q413', 'display_name': 'Physics', 'level': 0, 'score': 0.7801109}, {'id': 'https://openalex.org/C166861157', 'wikidata': 'https://www.wikidata.org/wiki/Q59151', 'display_name': 'Cosmological constant', 'level': 2, 'score': 0.7096224}, {'id': 'https://openalex.org/C33332235', 'wikidata': 'https://www.wikidata.org/wiki/Q18362', 'display_name': 'Theoretical physics', 'level': 1, 'score': 0.53556436}, {'id': 'https://openalex.org/C37914503', 'wikidata': 'https://www.wikidata.org/wiki/Q156495', 'display_name': 'Mathematical physics', 'level': 1, 'score': 0.5061714}, {'id': 'https://openalex.org/C2779343474', 'wikidata': 'https://www.wikidata.org/wiki/Q3109175', 'display_name': 'Context (archaeology)', 'level': 2, 'score': 0.5047542}, {'id': 'https://openalex.org/C99844830', 'wikidata': 'https://www.wikidata.org/wiki/Q102441924', 'display_name': 'Scaling', 'level': 2, 'score': 0.50265336}, {'id': 'https://openalex.org/C172790937', 'wikidata': 'https://www.wikidata.org/wiki/Q18343', 'display_name': 'Dark energy', 'level': 3, 'score': 0.494811}, {'id': 'https://openalex.org/C2777027219', 'wikidata': 'https://www.wikidata.org/wiki/Q1284190', 'display_name': 'Constant (computer programming)', 'level': 2, 'score': 0.48278773}, {'id': 'https://openalex.org/C30864177', 'wikidata': 'https://www.wikidata.org/wiki/Q742982', 'display_name': 'Friedmann–Lemaître–Robertson–Walker metric', 'level': 3, 'score': 0.4577765}, {'id': 'https://openalex.org/C2779886137', 'wikidata': 'https://www.wikidata.org/wiki/Q21030012', 'display_name': 'Symmetry (geometry)', 'level': 2, 'score': 0.443837}, {'id': 'https://openalex.org/C87040749', 'wikidata': 'https://www.wikidata.org/wiki/Q428971', 'display_name': 'Power law', 'level': 2, 'score': 0.42234945}, {'id': 'https://openalex.org/C207467116', 'wikidata': 'https://www.wikidata.org/wiki/Q4385666', 'display_name': 'Inverse', 'level': 2, 'score': 0.41241413}, {'id': 'https://openalex.org/C74650414', 'wikidata': 'https://www.wikidata.org/wiki/Q11397', 'display_name': 'Classical mechanics', 'level': 1, 'score': 0.37912515}, {'id': 'https://openalex.org/C26405456', 'wikidata': 'https://www.wikidata.org/wiki/Q338', 'display_name': 'Cosmology', 'level': 2, 'score': 0.33727133}, {'id': 'https://openalex.org/C53469067', 'wikidata': 'https://www.wikidata.org/wiki/Q505735', 'display_name': 'Lagrangian', 'level': 2, 'score': 0.31314915}, {'id': 'https://openalex.org/C62520636', 'wikidata': 'https://www.wikidata.org/wiki/Q944', 'display_name': 'Quantum mechanics', 'level': 1, 'score': 0.18762305}, {'id': 'https://openalex.org/C33923547', 'wikidata': 'https://www.wikidata.org/wiki/Q395', 'display_name': 'Mathematics', 'level': 0, 'score': 0.10073745}, {'id': 'https://openalex.org/C2524010', 'wikidata': 'https://www.wikidata.org/wiki/Q8087', 'display_name': 'Geometry', 'level': 1, 'score': 0.078155845}, {'id': 'https://openalex.org/C151730666', 'wikidata': 'https://www.wikidata.org/wiki/Q7205', 'display_name': 'Paleontology', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C41008148', 'wikidata': 'https://www.wikidata.org/wiki/Q21198', 'display_name': 'Computer science', 'level': 0, 'score': 0.0}, {'id': 'https://openalex.org/C86803240', 'wikidata': 'https://www.wikidata.org/wiki/Q420', 'display_name': 'Biology', 'level': 0, 'score': 0.0}, {'id': 'https://openalex.org/C199360897', 'wikidata': 'https://www.wikidata.org/wiki/Q9143', 'display_name': 'Programming language', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C105795698', 'wikidata': 'https://www.wikidata.org/wiki/Q12483', 'display_name': 'Statistics', 'level': 1, 'score': 0.0}], 'mesh': [], 'locations_count': 4, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1103/physrevd.64.083509', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4210190737', 'display_name': 'Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields', 'issn_l': '0556-2821', 'issn': ['0556-2821', '1089-4918', '1538-4500'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320261', 'host_organization_name': 'American Physical Society', 'host_organization_lineage': ['https://openalex.org/P4310320261'], 'host_organization_lineage_names': ['American Physical Society'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://arxiv.org/abs/astro-ph/0007128', 'pdf_url': 'https://arxiv.org/pdf/astro-ph/0007128', 'source': {'id': 'https://openalex.org/S4306400194', 'display_name': 'arXiv (Cornell University)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I205783295', 'host_organization_name': 'Cornell University', 'host_organization_lineage': ['https://openalex.org/I205783295'], 'host_organization_lineage_names': ['Cornell University'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': None, 'pdf_url': 'https://arxiv.org/pdf/astro-ph/0007128v1.pdf', 'source': {'id': 'https://openalex.org/S4306400194', 'display_name': 'arXiv (Cornell University)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I205783295', 'host_organization_name': 'Cornell University', 'host_organization_lineage': ['https://openalex.org/I205783295'], 'host_organization_lineage_names': ['Cornell University'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://api.datacite.org/dois/10.48550/arxiv.astro-ph/0007128', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4393179698', 'display_name': 'DataCite API', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I4210145204', 'host_organization_name': 'DataCite', 'host_organization_lineage': ['https://openalex.org/I4210145204'], 'host_organization_lineage_names': ['DataCite'], 'type': 'metadata'}, 'license': None, 'license_id': None, 'version': None}], 'best_oa_location': {'is_oa': True, 'landing_page_url': 'https://arxiv.org/abs/astro-ph/0007128', 'pdf_url': 'https://arxiv.org/pdf/astro-ph/0007128', 'source': {'id': 'https://openalex.org/S4306400194', 'display_name': 'arXiv (Cornell University)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I205783295', 'host_organization_name': 'Cornell University', 'host_organization_lineage': ['https://openalex.org/I205783295'], 'host_organization_lineage_names': ['Cornell University'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, 'sustainable_development_goals': [{'score': 0.83, 'display_name': 'Peace, justice, and strong institutions', 'id': 'https://metadata.un.org/sdg/16'}], 'grants': [], 'datasets': [], 'versions': ['https://openalex.org/W2047588386'], 'referenced_works_count': 37, 'referenced_works': ['https://openalex.org/W1652824618', 'https://openalex.org/W1656865051', 'https://openalex.org/W1841800975', 'https://openalex.org/W1853767801', 'https://openalex.org/W1967316721', 'https://openalex.org/W1982583605', 'https://openalex.org/W2003686608', 'https://openalex.org/W2022826698', 'https://openalex.org/W2023875957', 'https://openalex.org/W2026610045', 'https://openalex.org/W2029768515', 'https://openalex.org/W2031878893', 'https://openalex.org/W2032901690', 'https://openalex.org/W2033876671', 'https://openalex.org/W2044504109', 'https://openalex.org/W2045288334', 'https://openalex.org/W2049393017', 'https://openalex.org/W2055532382', 'https://openalex.org/W2062073902', 'https://openalex.org/W2067579792', 'https://openalex.org/W2086592505', 'https://openalex.org/W2096082453', 'https://openalex.org/W2097540703', 'https://openalex.org/W2111091765', 'https://openalex.org/W2137919480', 'https://openalex.org/W2146581281', 'https://openalex.org/W2147342626', 'https://openalex.org/W2151412071', 'https://openalex.org/W2158616117', 'https://openalex.org/W2591817099', 'https://openalex.org/W3037480702', 'https://openalex.org/W3037508136', 'https://openalex.org/W3101854387', 'https://openalex.org/W3102763870', 'https://openalex.org/W3104958390', 'https://openalex.org/W3181710030', 'https://openalex.org/W4300927353'], 'related_works': ['https://openalex.org/W4327944408', 'https://openalex.org/W4287993267', 'https://openalex.org/W2996683418', 'https://openalex.org/W2962846255', 'https://openalex.org/W2798567912', 'https://openalex.org/W2791451133', 'https://openalex.org/W2737587053', 'https://openalex.org/W2314434027', 'https://openalex.org/W2294080444', 'https://openalex.org/W1592690426'], 'abstract_inverted_index': {'In': [0], 'this': [1], 'paper': [2], 'we': [3, 16, 38, 40, 55, 77], 'present': [4, 62], 'exactly': [5], 'solved': [6], 'models': [7], 'in': [8, 48], 'the': [9, 22, 27, 34, 42, 49, 59, 69], 'context': [10], 'of': [11, 36, 44, 71], 'nonminimally': [12], 'coupled': [13], 'quintessence': [14], 'theories;': [15], 'show': [17], 'how': [18], 'potentials': [19], 'such': [20], 'as': [21], 'inverse': [23], 'power': [24], 'law': [25], 'and': [26], 'square': [28], 'hyperbolic': [29], 'sine': [30], 'are': [31], 'selected': [32], 'through': [33, 68], 'method': [35], 'solution': [37], 'use:': [39], 'impose': [41], 'existence': [43], 'a': [45, 63, 72, 80], 'Noether': [46], 'symmetry': [47], 'cosmological': [50], 'Lagrangian.': [51], 'The': [52], 'exact': [53], 'solutions': [54], 'obtain': [56, 79], 'relative': [57], 'to': [58], 'power-law': [60], 'potential': [61], 'tracker': [64], 'behavior': [65], 'and,': [66], 'furthermore,': [67], 'definition': [70], 'dynamical': [73], 'effective': [74], 'Q-cosmological': [75], 'constant,': [76], 'naturally': [78], 'scaling': [81], '\\ensuremath{\\Lambda}': [82], 'decay.': [83]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2047588386', 'counts_by_year': [{'year': 2014, 'cited_by_count': 1}, {'year': 2012, 'cited_by_count': 1}], 'updated_date': '2024-08-21T15:50:05.385723', 'created_date': '2016-06-24'}